baber/WOPTO huggingface dataset:
Patent JP-H0787056-A (JP)
Title: Digital demodulator
Inventor: IKEDA YASUNARI
IPC: H04L27/38
Filed: 1993-07-26
Abstract: PURPOSE:To recover a carrier signal from which the effect of disturbance is excluded as to an orthogonal frequency multiplex signal through a transmission line in which multi-path disturbance or the like is in existence. CONSTITUTION:I channel signal and a Q channel signal outputted from parallel/ serial conversion circuits 122, 123 are received by a selection circuit 1532 of a carrier signal recovery circuit 153. The selection circuit 1532 inputs only a demodulation signal of a frequency component corresponding to a predetermined carrier signal from the demodulation signals to a phase detection circuit 1533. A phase error output detected by the phase detection circuit 1533 is inputted further to a D/A converter circuit 1534, in which the signal is converted into an analog signal, an undesired frequency component is eliminated from the analog signal by a low pass filter 1535 and the result is a voltage signal controlling a local oscillator 113. The local oscillator 113 generates the carrier signal having a frequency corresponding to the voltage signal. Through the constitution above, a phase error with the recovered carrier signal is detected based on one specific carrier signal to control the local oscillator 113.
Patent JP-S6077042-A (JP)
Title: Sheet feeder
Inventor: HEINO MASARU
IPC: B65H7/06
Filed: 1983-10-04
Abstract: PURPOSE:To provide possibility of judging if copying can be made by sensing whether an additional means is feeding sheets to the body, using a sensing means. CONSTITUTION:In a plate for placing a sheet feed cassette 30 with a large capacity, an opening 33a is bored, which can be opened and closed to allow drop-in of an actuator 22 for a paper empty sensor installed inside the body 20 of a copying machine when said sheet feed cassette 30 is set in the cassette loading part 21 of the copying machine body 20. According to this arrangement, a sensing means 22 installed on the body can sense whether the additional means 30 is feeding sheets P to the body 20, so that the operator is now possible to judge if copying can be made from the sensing signal given from the body side, prior to manipulation for copying.
Patent JP-H0848777-A (JP)
Title: Prepolymer and its production
Inventor: MIYAZAKI TAKESHI
IPC: C08G75/14
Filed: 1994-08-05
Abstract: PURPOSE:To obtain a prepolymer composed of a main chain comprising an alkylene sulfide and side chains each comprising a styryl group by reacting vinylbenzaldehyde with a chlorobenzaldehyde and a compound of the formula: HS(CH2CH2S)2H. CONSTITUTION:Vinylbenzaldehyde is reacted with a benzaldehyde of formula I (wherein X is H or halogen) and a compound of formula II (wherein m is 2-30) in the presence of an acid catalyst to obtain a prepolymer composed of a main chain comprising repeating units of an alkylene sulfide and side chains each comprising a styryl group and represented by formula III (wherein n<1>+n<2> 2-1000, n<1>not equal to 0, and n<2>not equal to 0). It is desirable that m and m in formula II are each 2 or 3, because no prepolymer can be formed when m is 1, and a prepolymer of formula II (wherein m is 21 or above) can be hardly obtained. Examples of the acid catalysts include Lewis acids and mineral acids. Because of its activity, TiCl4 is used. This prepolymer can give a resin excellent in optical properties when copolymerized with another monomer (e.g. styrene or methyl acrylate), and therefore it is useful as a polymerizable component for an optical material, etc.
Patent JP-H0849949-A (JP)
Title: Refrigerating device
Inventor: MOMONO TOSHIYUKI
IPC: F25B49/02
Filed: 1994-08-05
Abstract: PURPOSE:To reduce the pressure loss of refrigerant guided to communicating pipes from a gas header without increasing the diameter of the communicating pipes on the outlet side of an evaporator and to maintain the high heat transfer rate of a refrigerant side and satisfactorily obtain the performance as the entire body of the evaporator even when the difference in the degree of superheat of the refrigerant is produced between the respective refrigerant pipes in the evaporator. CONSTITUTION:A plurality of communicating pipes 24 and 25 connected to a gas header 23 in the gas side of a heat exchanger 7 which is provided at the air inlet port of a side inlet/upper outlet type unit casing. The heat sensitive cylinder 15f of a heat sensitive expansion valve 15a is attached to the communicating pipe 24 located at an uppermost position, of the respective communicating pipes 24 and 25, in which refrigerant with the highest degree of superheat flows. The opening of the heat sensitive expansion valve 15a is adjusted based on the degree of superheat of the refrigerant flowing in this communicating pipe 24.
Patent JP-S6243854-A (JP)
Title: Automatic inter-music detection device
Inventor: UENO TAKASHI
IPC: G11B15/087
Filed: 1985-08-21
Abstract: PURPOSE:To detect an interblock time independently of a change in number of revolutions of a motor or in a load of a tape by utilizing an output of a rotation detector at the winding side so as to form the interblock detection time. CONSTITUTION:An arithmetic circuit 8 integrates a period T of a rotation detection signal detected by a rotation detector 3 fitted to a reel base of the winding side by using a value K (constant) set in advance. The value is sent to a comparator circuit 13. Further, a signal reproduced from a tape 9 by a reproducing head 10 is distinguished into a presence signal part and a no signal part by a no-signal detection circuit 12 via an amplifier 11 and a signal is inputted to a comparator circuit 13 only when it is identified to be the no-signal state. The period time inputted from the circuit 8 is compared with the length of the signal inputted from the circuit 12 by the comparator circuit 13, and when the latter exceeds the former time, a program search signal is outputted to an output terminal 14.
Patent JP-S6339936-A (JP)
Title: Production of magnetic rubber
Inventor: HORI NAOKI
IPC: C08L19/00
Filed: 1986-08-05
Abstract: PURPOSE:To produce a magnetic rubber in which a magnetic powder is uniformly dispersed, by adding a specified magnetic fluid and vulcanization additives and molding the mixture by vulcanization. CONSTITUTION:100pts.wt. oleophilic elastomer (e.g., polynorbornene) is mixed with 500-2500pts.wt. magnetic fluid formed by dispersing a magnetic powder in an oil (e.g., higher alkyl group-substituted naphthalene or eicosyl-naphthalene) compatible with the elastomer and vulcanization additives such as a vulcanizer and a vulcanization accelerator, and the mixture is molded by vulcanization.
Patent JP-H0529421-A (JP)
Title: Inspection of lead for surface mounting component
Inventor: SAGARA NOBUO
IPC: G01B11/00
Filed: 1991-07-24
Abstract: PURPOSE:To provide the inspection method, of a lead for a surface mounting component, wherein an accurate measured value can be obtained even when the distance between an object under test and a TV camera for measurement is shifted form an image sensing distance as the computation basis of a resolution as a reference. CONSTITUTION:In the inspection method of a lead for a surface mounting component, the bend, the pitch and the like of leads 2 at a component 1 for monitoring are inspected by using a measuring apparatus which measures the size of an object under test on the basis of an image which has been sensed and taken into by means of a TV camera. A plurality of images Z1, Z2 which have been sensed at an equal distance from the surface mounting component, in the parallel image sensing direction and at an equal image sensing angle by means of the TV camera are connected. The method is featured in the following manner: the interval distance D between image sensing positions at which the plurality of images have been sensed and a distance B which has been computed from the number of picture elements of the images and from a reference resolution are used as computation elements; a correction coefficient is computed; a correction by the correction coefficient is added to a measured value which has been computed by using the number of picture elements of the object to be measured on the image and by using the reference resolution; and the measured value is obtained.
Patent JP-2001011112-A (JP)
Title: Olefin polymerization catalyst and production of catalyst and olefin polymer
Inventor: MAKIO HARUYUKI
IPC: C08F4/645
Filed: 1999-06-30
Abstract: PROBLEM TO BE SOLVED: To obtain an olefin polymerization catalyst having high activity, keeping the performance of homogeneous catalyst in spite of a heterogeneous catalyst and capable of producing an olefin polymer having high bulk density and good particle form in high efficiency. SOLUTION: The objective olefin polymerization catalyst is produced by the prepolymerization of a monomer M having a polymerizable double bond in a state containing a solution of a catalyst component dispersed in a medium X essentially incapable of dissolving a transition metal compound (a) and the produced polymer. The solution of the catalyst component is produced by dissolving at least the transition metal compound (a) in a solvent Y incompatible with the medium X.
Patent JP-S57111681-A (JP)
Title: Method and mechanism for aligning of document
Inventor: IKUTA HIROTOSHI
IPC: G06K13/063
Filed: 1980-12-27
Abstract: PURPOSE:To enable stable alignment at short distance, by curving a document between an aligning roller and a feed roller arranged in front of the former. CONSTITUTION:Between aligning rollers 5 an preceding separation rollers 4, a document feed path is deflected at about 90 deg. in a curved shape. Consequently, a document 1 is curved at a part C between the rollers 4 and 5. The curved part C of this document decreases in rigidity extremely and even if the rear end part 1a of the codument 1 is sandwiched by a pick roller 3 and the separation rollers 4, the document 1 is deflected easily by the aligning force B of the aligning roller 5, so that the alignment requires only extremely short aligning distance L.
Patent JP-H0470428-A (JP)
Title: Hydraulic actuating circuit for constructing machine
Inventor: FUJII KAZUHIKO
IPC: E02F9/22
Filed: 1990-07-11
Abstract: PURPOSE:To ensure safety operation of a construction machine by limiting only pressure oil amount supplied to a particular hydraulic change-over value by a command from the outside in a hydraulic circuit of parallel circuit type for improved operationability of a hydraulic actuator. CONSTITUTION:A pipe line 27 which supplies the discharged oil of a hydraulic pump 2 to a hydraulic change-over value group A is formed in a parallel circuit type. There are provided an inlet port which is connected to the upstream side of a pipe line 27b, and a receiving part 22a which receives a control signal from the outside, and a hydraulic actuator 22 continuous to a hydraulic change- over value 5 is installed in the middle of the pipe line 27b. Next, a remote type signal generating means 24 is installed near a driver's seat, and a stepless signal achieved by operating it works upon a control signal regulating means 23, and a signal medium is converted to effect a control signal upon a flow rate control means 22. Besides, a control signal proportional to the magnitude of the signal is outputted to a pipe line 29 as oil pressure by the control signal regulating means 23 which receives it.
Patent JP-H0933463-A (JP)
Title: Sample container for thermal analysis
Inventor: TAKADA NATSUE
IPC: G01N25/20
Filed: 1995-07-21
Abstract: PROBLEM TO BE SOLVED: To provide a sample container for thermal analysis which is maintained at a predetermined level of height even when a sample is filled in pressed touch therein and is easily held by an automatic transfer device or the like. SOLUTION: The sample container has a cylinder which is of a smaller inner diameter at the side of an opening 2a. After a sample S is set in the container, a sample retainer lid 5 is put on the sample S and depressed while a claw part 6 is bent. The sample S is consequently pressed down, whereby the sample S pushed to a peripheral part presses the claw part 6 up and the claw part 6 is engaged with a coupling part 4.
Patent JP-H1011627-A (JP)
Title: Stepwise card feeder for time recorder
Inventor: SAITO MITSURU
IPC: B65H7/02
Filed: 1996-06-26
Abstract: PROBLEM TO BE SOLVED: To exactly stepwise feed a time card inserted to a time recorder to a printing step position set in advance without being affected by the surrounding temperature environment. SOLUTION: When a thermistor 26 detects the temperature in low temperature area, a low temperature WAIT time calculating means calculates low temperature WAIT time W1 and a card conveyer motor 5M is braked at timing delayed rather than the case of ordinary temperature just for this low temperature WAIT time W1 . When the thermistor 26 detects the temperature of high temperature area, high temperature WAIT time W2 is calculated, the card conveyer motor 5M is braked at timing delayed rather than the case of ordinary temperature just for this high temperature WAIT time W2 and the stepwise feeding of a time card TC is corrected.
Patent JP-H059515-A (JP)
Title: Method for operating blast furnace
Inventor: KASHIWADA MASAHIRO
IPC: C21B5/00
Filed: 1991-06-29
Abstract: PURPOSE:To extend service life of furnace lining by controlling furnace bottom temp. to the suitable molten iron temp. in the relation between the pre-obtd. molten iron temp. and molten iron tapping speed. CONSTITUTION:The relation between the molten iron temp. and the molten iron tapping speed is beforehand obtd., and when the operational rate changes, by changing the molten iron temp., the molten iron tapping speed is adjusted and the furnace bottom temp. is controlled to the suitable molten iron temp. so that this temp. becomes the same temp. as the temp. before the operational rate changes. By this method, control level of the furnace bottom is improved and heave or erosion of the furnace bottom extensively influencing the service life of blast furnace lining can be effectively prevented, and extension of this service life is attained.
Patent JP-H1130758-A (JP)
Title: Mirror declination mechanism
Inventor: AKITA TOMOHITO
IPC: G02B26/08
Filed: 1997-07-11
Abstract: PROBLEM TO BE SOLVED: To provide the high-speed mirror declination mechanism which is stable against an impact and has superior position precision. SOLUTION: The mirror declination mechanism which controls the direction of a light beam L by the angular deviation of the reflecting surface of a mirror 1 is so constituted that the restoring force of the mirror 1 corresponding to the angular deviation is generated by torsion bars 4 and 5 and the declination of the mirror 1 is imparted by cams 9 and 11. Further, the mirror 1 and torsion bars 4 and 5 are so related that one point on the beam reflecting surface of the mirror 1 fitted by the mirror declination mechanism comes to the intersection of the center axes of rotation (swing) of both the torsion bars 4 and 5.
Patent JP-S6163119-A (JP)
Title: Base station receiver
Inventor: OMURA ATSUSHI
IPC: H04W92/04
Filed: 1984-09-05
Abstract: PURPOSE:To improve surely the S/N by dividing a hexagonal communication into three rhombi and using both the angle and the space diversity in common. CONSTITUTION: An antenna switch 4 applies switching connecting among receivers 12-32, directivity antennas A1-A3 and a non-direction antenna A0 with free combination and its switching is controlled by a reception mode controller 6. Further, a level comparator 5 compares a reception level of the receivers 12-32, decides a receiver representing the highest reception level, the controller 6 obtains a time means value from the reception levels 61-63 of each receiver and controls the switch 4 according to the control float. Then a voting circuit 7 selects one of receiver demodulation signals and outputs it based on the reception level information of the receivers 12-32.
Patent JP-S6340882-A (JP)
Title: Control of tilting direction for ultrasonic wave transmitter and receiver
Inventor: HIRAOKA MINORU
IPC: G01S7/523
Filed: 1986-08-06
Abstract: PURPOSE:To stabilize the control of a tilting direction regardless of the pitching and rolling of a hull by data-processing a detected pitch angle and a detected roll angle obtained by an inclination sensor and obtaining an underwater direction (tilting direction) driving quantity. CONSTITUTION:A pitch angle sensor 1 and a roll angle sensor 2 detect a pitch angle Xp and a roll angle Xr, respectively, to input them to a CPU 3. The CPU 3 calculates a tilt driving quantity from a turning angle set by turning angle setting means 4, a tilting angle set by tilt setting means 5 and the angles Xp and Xr by a prescribed calculation and drives a motor 8 via a tilt driving signal generator 6 and a motor driving circuit 9 to control the direction of an ultrasonic beam from an ultrasonic oscillator 7 to a set tilting direction. Accordingly, the effect of inertia is eliminated and the tilting direction is stable against pitching and rolling.
Patent JP-H0931228-A (JP)
Title: Porous film
Inventor: SHIRAISHI TAIICHI
IPC: C08L101/16
Filed: 1995-07-21
Abstract: PROBLEM TO BE SOLVED: To prepare a porous film having uses such as various medical and sanitary materials such as a sheet for beds, a pillowcase, a sanitary napkin or a paper diaper, clothes for rainy weathers, medical materials such as gloves and industrial materials, etc., and further biodegradability and water repellency including packaging materials for various articles requiring air permeation. SOLUTION: This porous film is obtained by orienting a film comprising 100 pts.wt. aliphatic polyester-based biodegradable resin and 30-500 pts.wt. inorganic filler such as calcium carbonate in at least one or more axes and regulating the porous film so as to provide 34-40μN/mm critical surface tension on the surface thereof.
Patent JP-2000021092-A (JP)
Title: Defect control method for information storage medium, disk drive device, information storage medium and information processing system
Inventor: ITOU MOTOYUKI
IPC: G11B20/18
Filed: 1998-07-01
Abstract: PROBLEM TO BE SOLVED: To reduce delay of access caused by change processing of a defective sector. SOLUTION: A sector number of a previous inserted objective is included in a region, movement processing of TDL(thirdly defect list) movement objective in which a sector number of an inserted objective is changed at the last of a region is performed using TDL having a sector number of inserted objective and a sector number of inserting origin as information inserting a sector, conversion candidate extracting processing extracting SDL(secondary defect list) entry having a defective sector included in a region is performed, PDL/TDLA addition processing converting an extracted defective sector to PDL (primary defect list) and an extracted change sector to TDL is performed, finally, entry erasing processing erasing SDL entry already converted is performed.
Patent JP-H0851393-A (JP)
Title: Multiple-access communication equipment
Inventor: AIDA KOUJI
IPC: H04W28/04
Filed: 1994-08-08
Abstract: PURPOSE:To dispense with a base station and to enable retransmission even between mobile stations by rereceiving a signal by providing a receiver for necessary signals and a control device to make a request for retransmission if there exists a reception error in signals addressed to the self-station. CONSTITUTION:The mobile station inputs transmitted information from a transmitted information input terminal 1, and converts it into a transmitted signal by a control part 22, and this signal is given error correction information by an error correcting coding part 3 after passing through a retransmission processing part 17. After this signal is modulated by a modulating part 4, it is turned into a high frequency signal synchronously with a transmission timing signal 5 outputted from the control part 22 by a transmitting part 6, and it is transmitted through an antenna sharing part 8 and an antenna 9. Then, in the course of the transmission of the self-station, an attenuator 16 is inserted at the transmission timing signal 5 in order to avoid a leakage path to a receiving system. The quantity of this attenuator has a level suitable to a receiving level in the case that the transmitted signal to the self-station need be received, and it is made lower than the lowest receiving sensitivity in the case that the signal need not be received. Then, the mesh type network of TDMA communication is constituted by determining previously a system that each station transmits the signal sccessively.
Patent JP-S6430104-A (JP)
Title: Manufacture of ceramic material including lead
Inventor: TAKAGAKI MASAMI
IPC: H01C7/02
Filed: 1987-07-24
Abstract: PURPOSE:To obtain a positive type thermistor sintered body with no compositional unevenness by adding a specific amount ytterbium oxide to a mixture powder of PhO and TiO2, and mixing and crushing the temporarily baked powder baked at a specific temperature temporarily and a BaTiO3 type temporarily baked powder. CONSTITUTION:To a mixture powder of PhO and TiO2, 0.1 to 0.4 atomic % of ytterbium oxide is added, baked at 750 to 950 deg.C, and the resultant temporarily baked powder and a BaTiO3 type powder baked temporarily at 1000 to 1200 deg.C are mixed and crushed to obtain the objective material. Since the mixture powder is baked temporarily at a temperature not exceeding 950 deg.C at which the evaporation of PhO is made remarkable, the compositional unevenness resulting from the PhO evaporation can be prevented. A sintered body with no compositional unevenness and with a stable switching temperature property, voltage-resisting property, and the like can be obtained.
Patent JP-S5889081-A (JP)
Title: Driving circuit for motor
Inventor: OOBA SHIYOUSUKE
IPC: H02P1/16
Filed: 1981-11-20
Abstract: PURPOSE:To reduce the size and weight of a motor by supplying the charging voltage of a condenser to the motor at the starting time. CONSTITUTION:Switches 3, 4, 5 are closed at the contact (a) side at the ordinary time. Thus, a motor 2 is driven by the voltage VCC of a battery 6, and a condenser 7 is charged through the switch 4 and a resistor 8. When the motor 2 is again started after it is temporarily stopped, the switches 3, 4, 5 are switched to the contact (b) side. As a result, the terminal voltage VCC of the condenser 7 and the voltage VCC of the battery 6 are applied to the motor 2, and the voltage of approx. 2VCC are supplied. When it becomes the ordinary state, the switches 3, 4, 5 are switched to the contact (a) side. In this manner, the starting torque can be increased, thereby reducing the size and weight of the motor.
Patent JP-H0636545-A (JP)
Title: Optical disk device
Inventor: TAKITA KOICHI
IPC: G11B33/14
Filed: 1992-07-14
Abstract: PURPOSE:To provide the device which eliminates the need for the complete hermetic sealing over the entire part of a housing, has a good cooling effect, enables the packaging of an air filter within the device and facilitates the operation to exchange the air filter without increasing the device size. CONSTITUTION:The housing of the optical disk device 1 is formed of a bottom plate 2, an external panel 3a and an external panel 3b. The optical disk 1 is internally provided with a partition plate 4 for separating the space with the front part and rear part of the device. An optical disk drive 6 equipped with a cooling fan 5 is packaged in the front part of the device and a circuit board 7 having a connector for electrical connection to a computer side is packaged in the rear part of the device. The external panel 3b is provided with an air filter mounting hole 8. The air filter 9 is inserted into this mounting hole 8 and is packaged to the flank of the drive.