baber/WOPTO huggingface dataset:
Patent JP-2000068973-A (JP)
Title: Preamble generating method for ofdm and modulation circuit for ofdm
Inventor: KIZAWA TAKESHI
IPC: H04L7/00
Filed: 1998-08-19
Abstract: PROBLEM TO BE SOLVED: To provide an orthogonal frequency division multiplex(OFDM) preamble generating method and an OFDM modulation circuit that prevent deterioration in an error rate and detect a symbol timing at a high speed even when preamble signal for AGC is in use. SOLUTION: In the OFDM preamble generating method that generates a burst signal including at least one automatic gain control preamble signal being an OFDM signal used for orthogonal frequency multiplex communication and two synchronizing signals in succession to the preamble signal, the preamble signal and the synchronizing signals are generated based on the same predetermined fixed pattern and a prescribed phase change is given to each latter half of either the preamble signal or the synchronizing signal so as to generate a phase difference of about 180 degrees between the phase of the preamble signal for the latter half area and the phase of a plurality of the synchronizing signals for each latter half area.
Patent JP-H0396702-A (JP)
Title: Rod and piston connecting mechanism in hydraulic actuator control cylinder
Inventor: TANAKA KYOJI
IPC: F15B15/14
Filed: 1989-09-11
Abstract: PURPOSE:To eliminate play of a piston and a rod and prevent deviation of center with a simple structure by mounting an intermediate flange in a bolt which is fixed to the rod at a screw section by passing the piston by a guide shaft, and mounting an O-ring to the end face of the piston which contacts with it. CONSTITUTION:An intermediate flange 4b, a guide shaft 4c, and a screw shaft 4d are mounted in a bolt 4, the guide shaft 4c is engaged with a cylindrical piston 5, and the screw shaft 4d is screwed in a rod 3 to fix the cylindrical piston 5. An O-ring 6 is mounted on the face which contacts the intermediate flange 4b of the cylindrical piston 5, and the O-ring is tightened by screwing the screw shaft 4d. Thus, it is possible to eliminate play in the connection of the cylindrical piston 5 and rod 3 and prevent deviation of center with a simple structure.
Patent JP-S59117708-A (JP)
Title: Sound recording bias circuit
Inventor: ISHII SHIYOUICHI
IPC: G11B5/03
Filed: 1982-12-24
Abstract: PURPOSE:To improve the recording characteristic by connecting a high frequency transformer to an output terminal of a bias oscillator via an amplifier, connecting a resistor between one end of the secondary winding of the transformer and a reference potential and a recording head to the other end so as to simplify the process and to eliminate the need for the adjusting process. CONSTITUTION:An output terminal of the bias oscillator 21 is connected to a non-inverting input of an operational amplifier 22, an output of the amplifier 22 is connected to one end of the primary winding of the high frequency transformer 23 the other end of the primary winding of which is grounded, one end of the secondary winding of which is grounded via a resistor R, and the other end of the secondary winding of which is connected to one end of a recording head 24. The other end of the recording head 24 is grounded via a capacitor C and connected to an output terminal of a recording amplifier 25. Further, connection is made to an inverting input of the operational amplifier 22 so as to apply current feedback from a connecting point between the resistor R and one end of the primary winding of the transformer 23.
Patent JP-S61112733-A (JP)
Title: Two cycle internal-combustion engine
Inventor: NAKAZONO TORU
IPC: F02B33/04
Filed: 1984-11-07
Abstract: PURPOSE:To improve fuel consumption rate by providing a scavenging passage inclined opposite to the direction of rotation of a crank to prevent invasion of unevaporated fuel drop from a scavenging port into a cylinder. CONSTITUTION:The engine includes a scavenging passage 4 having a scavenging port 3 available for the opening provided in a cylinder 9 having an exhaust port 5 and an intake air port 7 and the scavenging passage 4 is provided inclined opposite to the rotation direction R of a crank 10. The scavenging direction S is given opposite to the rotation direction R of the crank 10.
Patent JP-H0396104-A (JP)
Title: Radio wave lens
Inventor: SATO YOSHIAKI
IPC: H01Q15/08
Filed: 1989-09-08
Abstract: PURPOSE:To attain ease of control of a dielectric constant and to obtain an excellent lens characteristic by providing a lens composed of resin composition made by dispersing low dielectric constant minute hollow spheres in a fibrous tetrafluoroethylene resin. CONSTITUTION:The radio wave lens is made of a resin component dispersing low dielectric constant minute hollow spheres 2 in a fibrous tetrafluoroethylene resin 1. That is, the component comprising the fibrous tetrafluoroethylene resin and the low dielectric constant minute hollow spheres has independent porosity porous structure. Thus, even when the porosity of the radio wave lens made of the resin component is increased, no crash nor deformation takes place by an external force such as compression or the like. Thus, the stable lens characteristic with high performance is obtained and the porosity of the resin component is simply and surely adjusted by the selection of particle diameter of the minute hollow spheres mixed in the component and the blending rate and the lens as designed is made easily.
Patent JP-2000064826-A (JP)
Title: Exhaust emission control device for internal combustion engine
Inventor: SUZUKI NAOTO
IPC: F01N3/20
Filed: 1998-08-19
Abstract: PROBLEM TO BE SOLVED: To enable complete poisoning recovery without deteriorating exhaust emission, in a poisoning recovery processing of NOx occlusion reduction catalyst. SOLUTION: This device is provided with an occluding amount recognizing means for recognizing an NOx occlusion reduction catalyst occluding NOx and a poisoning material when exhaust gas is in a lean state and occluding amount of the poisoning material in NOx occlusion reduction catalyst; a recovery means making the NOx occlusion reduction catalyst within a prescribed high temperature range and making exhaust gas as a recovery air fuel ratio for a recovery period after occluding amount recognized by the occluding amount recognizing means becomes a prescribed value; a recovery degree evaluation means evaluating a recovery degree of NOx occlusion reduction catalyst by the recovery means;  and a first changing means (steps 402 to 404) changing reduction material gross flowing into the NOx occlusion reduction catalyst during the next recovery period according to the recovery degree evaluated by the recovery degree evaluation means.
Patent JP-H1078264-A (JP)
Title: Air conditioner
Inventor: ARA HIROMI
IPC: F25B13/00
Filed: 1996-09-03
Abstract: PROBLEM TO BE SOLVED: To provide an air conditioner which adopts a low cost solenoid valve without reducing its power. SOLUTION: In an air conditioner provided with one outdoor unit comprising a compressor 1, an outdoor heat exchanger 3, a four way valve 2 and so forth and a plurality of indoor units comprising indoor heat exchangers 6a and 6b and so forth, there are provided motor-driven expansion valves 5a and 5b, provided at a plurality of liquid side branch pipes, which are branched from a liquid side main pipe 9 of the outdoor unit are connected to a gas side branch pipe which is branches from a gas side main pipe 9 of the outdoor unit and their corresponding liquid side main pipe respectively, thereby providing bypass pipes 7a and 7b, which are adapted to bypass each indoor heat exchanger and a solenoid valve 8 provided on the bypass pipe respectively.
Patent JP-H0964750-A (JP)
Title: Acoustic signal processing unit
Inventor: KUWAOKA TOSHIHARU
IPC: G10L19/02
Filed: 1995-08-18
Abstract: PROBLEM TO BE SOLVED: To attain the signal processing for the acoustic signal processing unit in which an acoustic signal with high resolution and high quality is decoded even when a dither is inserted to a frequency band higher than an audible frequency band through high frequency sampling and noise shaping. SOLUTION: Code information of an N-bit digital acoustic signal obtained by A/D-converting to a sequential sampling value resulting from sampling an acoustic signal with a sampling signal having a sampling frequency in excess of twice an upper limit frequency of an audible frequency band is divided into N-bit code information for an audible frequency band and into N-bit code information for a frequency band higher than the audible frequency band by band split filters 60, 61. The N-bit code information for the audible frequency band is into M-bit code information in the relation of M>N by a bit number conversion section BNC. The M-bit code information outputted from the bit number conversion section BNC and the N-bit code information outputted from the band split filter 61 are added by an adder section 62 while the most significant digits of them are in matching with each other.
Patent JP-S59123168-A (JP)
Title: Fuel cell system
Inventor: TAKAHASHI HIDEOMI
IPC: H01M8/04
Filed: 1982-12-28
Abstract: PURPOSE:To provide a fuel cell system which differential pressure of both gases is suppressed and safety is increased and energy loss is decreased by installing a control gas supply valve between a fuel gas supply part or exhaust part and control gas supply equipment, and between oxidizing gas supply part or exhaust part and control gas supply equipment respectively. CONSTITUTION:In a fuel cell main body 11, differential pressure between a fuel gas F and oxidizing gas A is detected with a differential pressure gage 26 and the signal is inputted to a controller 27. The first and second control gas supply valves 28 and 29 are installed between an exhaust part 11f2 of a fuel gas exhaust pipe 11F' and burning equipment 12, and between an exhaust part 11a2 of a oxidizing gas exhaust pipe 11A' and mixing equipment 13 respectively, and they are connected to a control gas supply equipment 30. The controller 27 monitors the differential pressure between fuel gas F and oxidizing gas A. When the differential pressure is increased, the first control gas supply valve 28 or the second control gas supply valve 29 on low pressure side is opened to supply pressure control gas having high pressure from the control gas supply equipment 30.
Patent JP-H10233226-A (JP)
Title: Biofuel cell without using electron transfer medium
Inventor: KIM BYUNG HONG
IPC: H01M8/16
Filed: 1997-08-29
Abstract: PROBLEM TO BE SOLVED: To reduce the amount of generated sludge and the like, and increase decomposition efficiency of organic substance when wastewater is utilized by using microorganism as a catalyzer, which conducts an electrode reaction without using electron transfer medium in a circulating voltage current measuring method. SOLUTION: Carbon non-woven fabric is used as an electrode in order to increase the surface area of the electrode, and a space between a positive electrode and a negative electrode is isolated by a cation exchange film to minimize the resistance of a fuel cell itself. A phosphate buffer solution containing potassium chloride is used as a positive electrode conductive medium, and a phosphate buffer solution is used as a negative electrode conductive medium. In a plurality of types of bacteria separated from paddy soil, a standard strain is used, which is of type having optimum deoxidizing force of ferric ion, oxidizes lactic acid into acetic acid to produce energy required for growth and development, and grows at a relatively low temperature. The bacteria produces ATP while oxidizing pyruvic acid into acetic acid, and grows as its energy source.  The lactic acid is utilized through the same metabolism route after oxidized by pyruvic acid.
Patent JP-S6486400-A (JP)
Title: Address display system for defective random access memory
Inventor: MIKOJIMA HIROO
IPC: G11C29/00
Filed: 1986-09-30
Abstract: PURPOSE:To detect a defective random access memory chip by diagnosing a random access memory used for a printer and displaying its defective memory address. CONSTITUTION:An address 5 of a random access memory 4 is designated by a microcomputer 1 and a specific write data 6 is written therein. Then the microcomputer 1 designates the address 5 again to read a readout data 7 from the random access memory 4. The write data 6 and a readout data 7 are collated and when they are dissident, it is discriminated as a defect of the random access memory, 'memory error' is displayed on a control panel and then the display of address (XXXX) of the defective random access memory is applied. Thus, a defect of the memory chip is detected.
Patent JP-S6478061-A (JP)
Title: Time designated automatic re-call system using high performance telephone terminal
Inventor: YAMANE TORU
IPC: H04M1/274
Filed: 1987-09-19
Abstract: PURPOSE:To perform automatic re-call issuing sequentially to designated plural opposite terminals when an opponent is in busy or absent by one time of call issuing operation by enabling the numbers of plural opposite terminals to be designated at every time zone by a call issuing terminal side. CONSTITUTION:When the opponent is in busy or absent as a result of call issuing by reading one, for example, M1 of plural main call issuing opponents registered in a main call issuing opponent registration part 1, the re-call issuing is performed sequentially for a sub call issuing opponent, for example, S1, S2,...Sm registered as the time zone including the present call issuing time, for example, Pk until incoming succeeds by referring to a time zone setting part 2 and a sub call issuing opponent registration part 3. In such a way, it is possible to perform the re-call issuing sequentially for not only the main call issuing opponent but the sub call issuing opponent with large possibility of presence set in advance with the time zone by only one time of call issuing operation.
Patent JP-H1079743-A (JP)
Title: Switching hub
Inventor: SUZUKI RYOJI
IPC: H04L12/44
Filed: 1996-09-04
Abstract: PROBLEM TO BE SOLVED: To provide a switching hub by which a terminal equipment belonging to a different sub network is connected. SOLUTION: An IP address of terminal equipments 111-122 connected to a port is acquired by an InARP (inverse address resolution protocol) protocol and a sub net mask of a sub net to which the terminal equipments 111-122 belong is acquired by a SNMP (simple network management protocol). The sub net address is obtained from the IP address and the sub net mask and the sub net address and the aforesaid sub net mask are stored as sub net information of the port. When a destination MAC address of a received frame is not registered in a relay decision table and the frame is a broadcast frame or a multi-cast frame, the frame is relayed to the port having the same sub net information as that of the received port.
Patent JP-2001058320-A (JP)
Title: Apparatus for producing ring-shaped fiber base material
Inventor: OKOCHI HIDEKI
IPC: B29C70/10
Filed: 1999-08-20
Abstract: PROBLEM TO BE SOLVED: To provide an apparatus for producing a ring-shaped fiber base material from a cylindrical fiber base fabric which enables the improvements of productivity, quality independent of operator' s skill, and the yield of products by mechanization in place of conventional manual work. SOLUTION: A cylindrical fitting member 1 which spreads/fits a cylindrical cloth F made of a woven cloth and/or a knitted cloth on/to its peripheral surface, a winding guide member 2 which, while a ring-shaped winding cloth part F1 is formed by winding a ring-shaped folding end at the upper end or lower end of the cloth F of the member 1 in the shape of a ring, guides the cloth F1 along the peripheral surface of the member 1, and a relative movement means which moves the member 1 and/or the member 2 relatively in the direction to wind the cloth F in the shape of a ring are included.
Patent JP-2000062391-A (JP)
Title: Whiteboard
Inventor: TERAJIMA AKIRA
IPC: B43L1/04
Filed: 1998-08-20
Abstract: PROBLEM TO BE SOLVED: To easily hold a sheet or the like by laminating a resin plate having a holding part at least on a part of a surface side of a writing board. SOLUTION: A white layer 2 is provided on a base plate 1 made of a sheet- like soft magnetic plate or the like. Further, a hard coating film is adhered and laminated as a writing screen layer 3 onto the layer 2 to obtain a writing board 4. The board 4 is punched in a rectangular shape rounded at four corners by a die. A plate made of polypropylene or the like is punched at its outside in the same size as the board 4 by the die to form a holding part 7 at its lower left side, a resin plate 6 is formed, and adhered onto the board 4 by a double- sided tape 5. The part 7 is formed of an L-shaped slit 7a and a tongue piece part 7b of the plate 6. Since the part 7b is not directly adhered fixedly to the board 4, a memo sheet 8 or the like is inserted into a gap between the part 7b and the board 4 by utilizing an elasticity of the plate 6 and can be sandwiched therebetween.
Patent JP-H0546043-A (JP)
Title: Heat roller of fixing device
Inventor: SAKATA YOSHIO
IPC: H05B3/00
Filed: 1991-08-20
Abstract: PURPOSE:To widen the usable region of the exothermic part of the heat roller by integrally molding the exothermic part and shaft parts of the same blank material and providing parts formed to the resistance lower than the resistance of other parts on the outside surface near the shaft ends which are on the outer side of the use region of the exothermic part. CONSTITUTION:The exothermic part 1 and the tubular shaft parts 2 are integrally molded by using conductive ceramics. The low-resistance parts 3 which are provided over the entire periphery on the outside surfaces near the shaft ends on the outer side of the use region of the exothermic part 1 and are formed to the resistance value lower than the resistance value of the other parts are formed by using the conductive ceramics in the same manner as for the other parts, i.e., body part 4, of the roller. The electrical conductivity in these parts is made higher than in the body part 4 by adjusting the amt. of the conductive component, such as iron powder, to be compounded. The temp. curve of the heat roller is shortened in the range of the shear drop parts at both ends of the exothermic part 1 and the flat range of the temp. curve is expanded if such low-resistance parts 3 are provided. The usable region is thus expanded.
Patent JP-H0633158-A (JP)
Title: Treatment of zinc-and tin-containing scrap
Inventor: SUGAWARA KINICHI
IPC: C22B19/30
Filed: 1992-07-17
Abstract: PURPOSE:To separate and recover Zn and Sn as ZnO2 and SnO2 from steel scrap contg. the Zn and Sn by evaporating and separating the Zn and Sn as chlorides by decomposition of NH4Cl, then oxidizing the chlorides by steam. CONSTITUTION:The scrap of a steel plate plated with the Zn and the Sn is charged together with fuel into a heating furnace and is heated to 750 to 1000 deg.C in a neutral or weakly reducing atmosphere. The NH4Cl is supplied to the furnace and is decompose to HCl and NH3. The Zn and Sn in the scrap are brought into reaction with the HCl and are evaporated to ZnCl2 and SnCl2, which are captured in a capturing column; thereafter, the capturing furnace is heated to >=750 deg.C while the steam is passed therethrough to oxidize the ZnCl2 and SnCl2 which are separated and recovered as crude oxides, such as ZnO2 and SnO2. The NH3 in the exhaust gas of the heating furnace reacts with the HCI formed by the oxidation reaction of the ZnCl, and SnCl2 and is reutilized for formation of the ZnCl2 and SnCl2 as the NH4Cl. The scrap discharged from the heating furnace is used for iron making raw materials as the high-grade steel scrap without contg. the Zn, the Sn and Fe2O3.
Patent JP-S61112883-A (JP)
Inventor: MITSUTAKE TAIICHIRO
IPC: F16L11/08
Filed: 1984-11-08
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-2000069238-A (JP)
Title: Control method for image reader
Inventor: NAITO MITSUHIRO
IPC: H04N1/04
Filed: 1998-08-20
Abstract: PROBLEM TO BE SOLVED: To detect the read reference position of an image sensor with high accuracy without being affected by an external light by differentiating a read range in the main scanning direction of the image sensor from an image read range when sensing the image read reference position by the image sensor. SOLUTION: R, G, B LEDs 202 which are light sources for respective color are integrated with a lens array and a line sensor 201 or the like to configure a close contact image sensor. Then by causing an LED drive circuit 203 to switch, lighting for each of the LEDs 202 of each color by each line is made to read an R, G, B line sequential color image, while moving the image sensor. This image scanner detects a border between a white board and a black board, by using an image signal when the line sensor 201 reads the whiteboard and the blackboard to detect a home position which is a read reference position of the image sensor. In this case, the read range of the image sensor in the main scanning direction is differentiated from the image read range.
Patent JP-H0625674-A (JP)
Title: Low-temperature separation for recovery of heavy hydrocarbon product
Inventor: DENIISU PATORITSUKU BAANHAADO
IPC: C10G5/06
Filed: 1992-08-10
Abstract: PURPOSE: To separate and recover a heavy hydrocarbon product in high efficiency by combining unit processes of a specific cooling, a phase-separating, a rectifying and a stripping.  
     CONSTITUTION: In a series of steps (A) to condense partly by a cooling gas stream, (B) to separate vapor and liquid components from the partly condensed gas in a phase separator, (C) to form a light gas stream and a heavy liquid stream by rectifying a vapor component by low temperature dephlegmation, (D) to obtain residual stream consisting of heavy hydrocarbon by stripping a liquid component from step B and a heavy liquid stream from step C in the stripping column with a reboiler and (E) to provide a predominant amount of refrigeration for the process from a single loop vapor recompression refrigerator using a mixed refrigerant, the improved process comprises feeding directly liquid components from steps B and C to the stripping column operated at lower temperature than surrounding one, rectifying the generated vapor with a vapor component from step D while feeding it directly to the phase separator of step B, and providing a portion of heat capacity of the reboiler by using the mixed refrigerant used in step E as a heat source of the reboiler. 
     COPYRIGHT: (C)1994,JPO
Patent JP-H04114424-A (JP)
Title: Heat treatment device
Inventor: MIYAGAWA KAZUHISA
IPC: H01L21/22
Filed: 1990-09-04
Abstract: PURPOSE:To improve the fixing efficiency of a boat carrier by a method wherein the fine adjustment mechanism of the retainer part of a boat holding bar type member in the right and left directions as well as the other fine adjustment mechanism making alignment of the central line direction of a fork with that of a heat treatment chamber by swiveling the other end side of said bar type member using one side of said member as a fulcrum are provided. CONSTITUTION:The position of a reaction tube 4 as a heat treatment chamber is roughly set up and then a boat 3 carrier is arranged. Next, after this arrangement, a seesaw base 51 is aligned by shifting in the right and left directions on a sliding plate 58 using a bolt 61 and a nut 62 so that the point-held position by a screw 40 in a retainer part 2 may be located on the prolonged line of the central line of the reaction tube 4 to fix the position in the right and left directions to a fixing base 6. Next, the retainer part 2 is rotated on the seesaw base 51 centered on the point-held position by the screw 40 turning a knob thereby swivelling the other end 1B of a fork l in the right and left directions. Finally, the central line direction of the fork l is aligned with the central line direction of the reaction tube 4.
Patent JP-S62118157-A (JP)
Inventor: ERITSUKU RAHOWAITO
IPC: F16H53/00
Filed: 1986-10-01
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。