baber/WOPTO huggingface dataset:
Patent JP-H04172002-A (JP)
Title: Frequency modulation circuit by pll control
Inventor: ICHIHARA KAZUHIRO
IPC: H03C3/02
Filed: 1990-11-06
Abstract: PURPOSE:To keep a modulation degree to be constant towards the carrier of an arbitrary frequency by independently providing a variable capacitor C which changes the frequency of the carrier, and a variable capacitor C for modulation. CONSTITUTION:A VCO is equipped with a variable capacitor C2 for controlling a carrier oscillation frequency, a variable capacitor C3 for modulation to which a modulation signal is inputted, and a modulation degree correcting voltage generating circuit 24. Then, a voltage for controlling the VCO outputted from a PLL control part 112 is inputted to the variable capacitor C2 for the carrier oscillation. On the other hand, a modulation degree correcting voltage outputted from the modulation degree correcting voltage generating circuit 24 is inputted to the variable capacitor C3 for modulation, and the modulation degree of the modulation signal is kept to be constant at the time of changing the frequency of the carrier. Thus, a frequency modulation circuit by a PLL control in which the modulation degree is constant even at the time of changing the frequency of the carrier, can be obtained.
Patent JP-H05135979-A (JP)
Title: Manufacture of permanent magnet
Inventor: MINETA YOSHITSUGU
IPC: H01F41/02
Filed: 1991-11-14
Abstract: PURPOSE:To obtain a high corrosion resistant permanent magnet by hot processing rare earth element-transition metal element-group IIIb element based alloy, heat-treating it, cutting/polishing it, barrel-plating the surface of the magnet with a corrosion resistant metal coating layer, and magnetizing it. CONSTITUTION:Basic components contain by atomic percentage at least one or more types selected from rare earth elements including yttrium of 12-25%, at least one or more types selected from transition metal elements of 65-85%, and at least one or more types selected from group IIIb elements of 3-10%. After an alloy containing the basic components as main ingredients is melted- cast, a cast ingot is hot-processed by one type selected from pressing, rolling, extruding, and casting at 500 deg.C or higher by a processing degree of 50% or more, and then heat-treated at 250-1100 deg.C. Then, it is cut-polished in a desired magnet shape, the surface of the magnet is barrel-plated with a corrosion resistant metal coating layer 1-100mum, and then magnetized.
Patent JP-H11129545-A (JP)
Title: Solid scanning type optical writing device and method for driving it
Inventor: YAGI TSUKASA
IPC: G02F1/055
Filed: 1997-10-30
Abstract: PROBLEM TO BE SOLVED: To set a quantity of an exposing light whereby a gradation of image data becomes linear with respect to an image density of a recording medium by providing a driving circuit for modulating a pulse width of a driving signal applied to an optical shutter element by using a basic clock signal to modulate the quantity of the exposing light to the recording medium. SOLUTION: Optical shutter element DA00-DAff, DB00-DBff are comprised of columns A, B because of the limitation of ceramics processing and two sets of driving circuits 40 are provided corresponding to the columns A, B. A common electrode 11 is provided in a central section of each of the columns of the optical shutter elements and individual electrodes 12 which are provided in both sides thereof are connected to the driving circuits 40, respectively. Each of the driving circuits consists of an 8-bit shift register 41 for shifting image data DATA (8 bits/256 gradations) of each pixel, a latch circuit 42 for latching 8-bit data, an 8-bit counter 43 for counting the number of gradations, an 8-bit comparator 44, a gate circuit 45 and a high voltage driver 46.
Patent JP-H02144682-A (JP)
Title: Optical reader
Inventor: SATO KOJI
IPC: G06K7/10
Filed: 1988-11-25
Abstract: PURPOSE:To remove dangerousness and to miniaturize an optical reader by detecting the size of variation in the photodetective quantity of reflected light, and when the size is dropped less than a fixed value, stopping laser oscillation. CONSTITUTION:An electric signal outputted from a photoelectric conversion element 10 is inputted to an A/D converter 11 and a photodetecting quantity detecting circuit 13 and an output signal from the circuit 13 is inputted to a laser driving circuit 1. The circuit 13 detects the size of variation in the photodetective quantity of laser beams 3 concentrated into the element 10, and when the size of variation is dropped less than the prescribed value, outputs a laser output stop signal. Consequently, dangerousness at the time of stopping the sweaping of the laser beams 3 can be removed and the device can be made miniature.
Patent JP-H11238690-A (JP)
Title: Dummy wafer and manufacture thereof
Inventor: KOJIMA HIROSHI
IPC: C04B35/565
Filed: 1998-10-21
Abstract: PROBLEM TO BE SOLVED: To provide a dummy wafer and a method of manufacturing the same which is made difficult for a CVD film attached to the surface to exfoliate, even if it grows thick. SOLUTION: A dummy wafer Wa, having an average surface finish Ra of 1 to 10 μm is obtained by forming a SiC film 2a on the surface of a carbon substrate 1 by the CVD coating, forming a SiC substrate 2b for removing the carbon substrate 1, forming a substrate 2c by grinding the substrate 2b, forming a substrate 2d by chamfering the substrate 2c, and sandblasting the substrate 2d.
Patent JP-H08159784-A (JP)
Title: Traveling position display device
Inventor: ISOBE MOMOKO
IPC: G09B29/10
Filed: 1994-12-02
Abstract: PURPOSE: To provide a traveling position display device in which information to be displayed on a map such as a place name, a facility, etc., necessary by a user is selected and easily recognized. CONSTITUTION: The driver's own vehicle position is detected based on sensor signals of a bearing sensor 1, a distance sensor 2, etc., to be input through a sensor signal processor 4, and map data corresponding to the detected position is read from a CD-ROM 7. A CPU 10 displays a map described with driver's own vehicle map formed by an image processor 15 based on the map data and the detected his own vehicle position on a liquid crystal display 8A via a V-RAM 16, selects the type of information to be displayed on the map by a touch panel 8B, highlights the selected information by distinguishing it from other information or displays only the selected information.
Patent JP-H08162594-A (JP)
Title: Composite lead frame and semiconductor package
Inventor: SUZUKI KATSUMI
IPC: H01L23/50
Filed: 1994-12-02
Abstract: PURPOSE: To obtain a thinner package by equalizing thickness of the upper and lower molds at the time of molding, while holding a strength of leads of a composite lead frame joining a substrate to the lead frame. CONSTITUTION: A composite lead frame can be formed by joining a substrate 3 to load a semiconductor chip to an inner lead 4 of the lead frame 1. The joint part 4a of the inner lead 4 of the lead frame 1 is half-etched to become thinner than the outer lead 5. The thinner joining portion 4a is recommended to becomes one half or less in the thickness of the outer lead 5 of the lead frame 1.
Patent JP-S63154660-A (JP)
Title: 1,3,4,5-tetrahydrobenz(cd)indole derivative
Inventor: SOMEI MASANORI
IPC: C07D209/90
Filed: 1986-12-16
Abstract: NEW MATERIAL:A compound expressed by formula I (R<1> is 1-5C alkyl; R<2> is H or 1-6C alkyl). EXAMPLE:4, 5-Trans-5-(2-methyl-1-propene-1-yl)-4-propionylamino-1,3,4,5-tetra hydrobenz[cd]indole. USE:An intermediate for production of medicine. PREPARATION:A compound expressed by formula II is dissolved in methylene chloride or the like and a reactive functional derivative of carboxylic acid expressed by formula III and triethylamine are added to the solution and the mixture is stirred at the room temperature to provide the compound expressed by formula I.
Patent JP-H02148567-A (JP)
Title: Organic electrolyte cell and manufacture thereof
Inventor: SADAMURA AKIRA
IPC: H01M6/16
Filed: 1988-11-28
Abstract: PURPOSE:To improve electric contact of positive electrode with a positive electrode case while facilitating cell manufacture by making ruthenium oxide to be contained inside a positive electrode mixture while so as to much exist especially on a surface layer of the positive electrode mixture. CONSTITUTION:A positive electrode mixture 5 having graphite fluoride as a positive electrode active material directly comes in contact with a positive electrode case 6 to form an organic electrolyte cell. The positive electrode mixture 5 contains ruthenium oxide, while its distribution is made to much exist especially on the surface of the positive electrode mixture 5. Ruthenium oxide is conductive for becoming a conductive material of the positive electrode and having large bulk density so that a positive electrode filling quantity is so much increased while being stable to thermal decomposition. Ruthenium oxide is made by thermal decomposition of ruthenate at a temperature of 250 to 450 deg.C so that manufacture of the positive electrode mixture and filling thereof is easy, and thus the cell is easily manufactured.
Patent JP-2001117596-A (JP)
Title: Method and device for audio signal reproduction
Inventor: MIZUFUJI TARO
IPC: G10L21/047
Filed: 1999-10-21
Abstract: PROBLEM TO BE SOLVED: To effectively reproduce a voice with a target magnification held constant for a long time unit without any break of the voice. SOLUTION: A sound signal in a unit section of 600 seconds is read out right after a currently reproduced unit section of 600 seconds, it is judged whether 12,000 divided judging unit periods of 50 milliseconds (2,400 samples) are voiced or voiceless, and voiced/voiceless sound discrimination information of 12,000 bits is stored. When the voice data of the unit section are reproduced and outputted, the ratio of the occupation of a voiceless part of the unit section is calculated from the voiced/voiceless sound discrimination information of the 12,000 bits and the reproduction magnification X of voiced sound parts is determined. When A bits among the 12,000 bits show a voiceless state, X=(12,000-A)/600 is obtained on condition that the target magnification is 2.  Voiceless sound data are deleted from the reproduced voice data in the unit section of 600 seconds in 2,400-sample units and only voiced sound data are segmented in 2,400-sample units, and the voiced sound data which are compressed to 1/X are written to an output buffer and read out at a specific rate.
Patent JP-H02144966-A (JP)
Title: Semiconductor integrated circuit
Inventor: FUKUDA HIDEO
IPC: H01L27/14
Filed: 1988-11-28
Abstract: PURPOSE:To eliminate an irregularity in a circuit constant by a method wherein a plurality of photodetecting parts are arranged in the central part of a semiconductor chip and amplifier circuits, of an identical pattern, corresponding to the individual photodetecting parts are arranged in peripheral parts of the semiconductor chip. CONSTITUTION:Photodetecting parts 2 to 5 used to convert an optical signal into an electric-current signal are arranged in the central part of a semiconductor chip 1. Amplifier circuit parts 6 to 9, of an identical pattern, designed to have an identical circuit constant have a function to convert an electric current into a voltage and are arranged in peripheral parts of the semiconductor chip 1. Signals which have been converted photoelectrically by the individual photodetecting parts 2 to 5 are input individually to the amplifier circuit parts 6 to 9 by aluminum wiring parts. Since the individual amplifier circuit parts are constituted as an identical layout, it is possible to eliminate an irregularity in a circuit constant among the individual circuit parts and to reduce an irregularity in an offset voltage characteristic and an output voltage characteristic.
Patent JP-H09146793-A (JP)
Title: Program evaluation method and device
Inventor: NIWA KUNIO
IPC: G06F11/28
Filed: 1995-11-17
Abstract: PROBLEM TO BE SOLVED: To correctly decide the end of execution of a subprogram by making use of the address value of a stack pointer which varies when the program processing branches out into a subprogram from a main program. SOLUTION: When a subprogram 101 is continuously carried out while a program 100 to be debugged is carried out, a RET instruction (4) of the subprogram 101 is carried out. The instruction (4), however, instructs to return the subprogram 101 to the program 100. Therefore, an address value comparison means 104 decides the coincidence with the address value of a stack pointer when a CALL instruction (1) is carried out. Then a coincidence signal 106 is generated to a step execution control means 111 and a step execution control flag is set up. The flag state check processing 113 decide that the control flag is set and therefore the end of execution of the subprogram 101 is decided. Then the processing 113 is shifted to an instruction execution result processing 114.
Patent JP-H06145183-A (JP)
Title: New cyclophosphazene derivative containing substituted nadiimidophenoxy group, its production and production of its polymer
Inventor: MARUYAMA ISAO
IPC: C08G79/025
Filed: 1992-11-10
Abstract: PURPOSE:To provide a new compound having high yield and selectivity, soluble in ordinary solvent and giving a flame-retardant cured article having excellent adhesivity and heat-resistance by conventional molding method and, accordingly, useful as an electronic part, adhesive, etc. CONSTITUTION:The compound of formula I [(n) is 3 or 4; at least one of R<1> and R<2> is substituted nadiimidophenoxy of formula II (R<3> is H or non-reactive group; R<4> is 1-6C alkyl or alkenyl) and the other is phenoxy which may have non-reactive substituent], e.g. hexaallylnadiimidophenoxy-substituted cyclophosphazene of formula III. The compound can be produced by reacting cyclophosphazene chloride with a substituted nadiimidophenol of formula IV [e.g. 4-(N'-allylbicyc1o[2,2,1]hept-5'-ene-2',3'-dicarboxyimido)phenol] in the presence of a 4-(N-mono or dialkylamino)pyridine (preferably 4-methylaminopyridine) and a hydrochloric acid acceptor (preferably aliphatic t-amine such as trimethylamine).
Patent JP-H02185555-A (JP)
Title: Polymer alloy having high aging resistance
Inventor: HERUBERUTO AIHENAUAA
IPC: C08L33/12
Filed: 1989-11-20
Abstract: PURPOSE: To impart high weather resistance and aging resistance, good workability, and high strength at a low temperature by blending each of silicone rubber particles, EPDM rubber particles and acrylic rubber particles, with polymers grafted by styrene-based monomers and acrylonitrile, respectively.  
     CONSTITUTION: Polymer alloys provided by blending from 5 to 95 pts.wt. of (A) silicone rubber graft copolymers: a graft product of a mixture of from 50 to 100 pts.wt. of styrene, α-methyl styrene, vinyl toluene, methyl metacrylate and mixtures thereof and from 0 to 50 pts.wt. of acrylonitrile on silicone rubber particles having an average particule diameter of from 0.10 to 0.50 μm with a total rubber content of from 30 to 90 wt.%, and from 95 to 5 pts.wt. of (B) EPDM graft copolymers: a graft product of similar monomer mixtures as (A) on EPDM having an average particle diameter of from 0.20 to 1.00 μm with a total rubber content of from 10 to 50 wt.%, and from 10 to 200 pts.wt. (based on 100 pts.wt. A+B) of (C) acrylic rubber graft copolymers: a graft product of similar monomer mixtures as (A) on acrylic rubber particles with an average particle diameter of from 0.05 to 1.00 μm with a total rubber content of from 30 to 80 wt.%. 
     COPYRIGHT: (C)1990,JPO
Patent JP-H03159436-A (JP)
Title: Token passing system
Inventor: WATANABE YOSHINORI
IPC: H04L12/42
Filed: 1989-11-17
Abstract: PURPOSE:To stably maintain a time token protocol algorithm by providing a band control station on a ring, previously deciding a highest priority data band which can transmit data within target token revolving time and informating the band control station of the communication band of high priority data prior to the start of communication. CONSTITUTION:A station which desires synchronous data transfer transmits a band use request to the band control station by a packet 1. Multiple-address by a function address designating a station having a band control function is used for the destination address of the band use request packet. The band control station judges the maximum value of synchronous data when synchronous data transfer is permitted from information of the band use request packet 1 and a maximum quantity which a synchronous data transfer quantity permitted till that time can take in a data base held in a self station. When the maximum quantity does not disobeys a time token protocol, a packet 2 permitting band use is transmitted. When there is possibility that the restriction of the target token revolting time is not kept, information on connection denial is given to an originating station by setting a line to be busy.
Patent JP-2001117765-A (JP)
Title: Data recording/reproducing device
Inventor: ITO NOBUHIKO
IPC: G11B20/10
Filed: 1999-10-21
Abstract: PROBLEM TO BE SOLVED: To easily return a reboot program to a normal state even when the rewriting of the reboot program is failed at the time of rewriting a control program. SOLUTION: At the time of receiving a reboot program rewriting command from a master device 20, a central processing unit 12 starts a 1st reboot program in a 1st reboot program area 30, rewrites a reboot program in a 2nd reboot program area 31 to a reboot program received from the master device 20, and at the time of receiving an application rewriting command from the master device 20, starts the reboot program in the 1st reboot program area 30 or the 2nd reboot program area 31 and rewrites an application program in an application program area 32 to an application program received from the master device 20.
Patent JP-2000117784-A (JP)
Title: Injection molding machine for manufacturing hollow plastic article
Inventor: VAN MAANEN DIRK
IPC: B29C45/72
Filed: 1998-10-21
Abstract: PROBLEM TO BE SOLVED: To miniaturize the constitution and upgrade the manufacturing efficiency by providing a cooling device including several cavities for cooling between the cavities of a mold and on both ends of a row of the cavities and at the same time, arranging each of cores of one group alternately with each of cores of the other group. SOLUTION: In a mold part 40, cavities 43a, 43b, 43c for cooling are arranged between cavities 42a, 42b and on each of the ends of a row of the cavities. Next, a mold part 41 having cores 46a-46d has the cavities 42a, 42b and the cavities 43a, 43b, 43c for cooling arranged opposite to the cores 46a-46d. When the mold keeps the closed position, the cores 46b, 46d are introduced into the cavities 42a, 42b to make preforms around the cores 46b, 46d. On the other hand, the other cores 46a, 46c are introduced into the cavities 43a, 43b for cooling. After the opening of the mold, the mold part 41 moves horizontally to set the core 46d opposite to the cavity 43c for cooling. The preforms are likewise made around the cores 46a, 46c in the cavities 42a, 42b.
Patent JP-H01143346-A (JP)
Title: Semiconductor device
Inventor: KODAMA HIRONORI
IPC: H01L23/28
Filed: 1987-11-30
Abstract: PURPOSE:To further improve the moisture resistance, chemical resistance, etc. of a semiconductor device by covering the outer surface of resin filled in a gap between a semiconductor chip and a substrate on which the chip is placed further with metal or ceramics. CONSTITUTION:A semiconductor device is formed of a semiconductor chip 1, a substrate 2 on which the chip 1 is placed, a solder connection unit 3 formed between the opposite electrode terminals of the substrate 2 and the chip 1, and resin 6 filled in a gap between the substrate 2 and the chip 1. In this case, the outer periphery of the resin 6 is covered with metal or ceramics 7. Then, since the filled resin 6 can be protected and a covering material can be selected in a wide range, it can be coped under severe testing conditions, manufacturing conditions, special available environments. Thus, moisture resistance, chemical resistance, etc. can be further improved.
Patent JP-H04172984-A (JP)
Title: Detecting circuit for rotational speed of dc motor
Inventor: ISOMURA TOSHIAKI
IPC: H02P7/06
Filed: 1990-11-06
Abstract: PURPOSE:To eliminate a sensor and to prevent an erroneous detection by detecting a variation in a brush current as a voltage waveform, and calculating a difference of a delayed waveform from the delayed voltage waveform and a directly obtained voltage waveform as a reference of a rotational speed detection signal. CONSTITUTION:In the case of 100% control of a PWM control, a voltage waveform varied in response to a variation in the current of a brush is delayed by a CR time constant of a second low pass filter 3. Microscopic voltage difference of both the waveforms is amplified by a differential amplifier OP1. Then, the waveform is delayed with the CR time constant of a third low pass filter 4. Then, a comparator OP2 has a hysteresis, and outputs a pulse waveform varying in response to a variation with a reference voltage waveform. Accordingly, a pulse output responsive to the variation in the brush current, i.e., the rotational speed of a motor 1 is obtained.
Patent JP-H10143839-A (JP)
Title: Magnetic recording medium and magnetic recording device using that
Inventor: MATSUNUMA SATORU
IPC: G11B5/72
Filed: 1996-11-12
Abstract: PROBLEM TO BE SOLVED: To obtain a medium having stable sliding durability characteristics for a long time and weather resistance by forming a thin film comprising a fluorine-contg. org. material lubricant and one or more kinds of compd. having electron affinity on a protective film of a magnetic recording medium. SOLUTION: The fluorine-contg. org. material lubricant is a perfluoropolyether polymer lubricant having the main chain structure comprising three elements of carbon, fluorine and oxygen. The compds. having electron affinity are fluorine molecules, chlorine molecules or bromine molecules, and for example, tin tetrachloride, aluminum chloride and boron trifluoride can be used. It is preferable that the whole or part of electron states of these compds. having electron affinity are anion radical. The lubricant and the compd. having electron affinity are mixed by 1:1 to 100:1 molar ratio. The film is formed to 0.1nm to 100nm thickness. By forming the lubricant layer, decomposition of the lubricant induced by exoelectrons produced by sliding with a head can be suppressed, which prevents decrease in the lubricating function.
Patent JP-H02144785-A (JP)
Title: System for controlling emitted light quantum of laser of bar-code reader
Inventor: SATO SHINICHI
IPC: G06K7/10
Filed: 1988-11-28
Abstract: PURPOSE:To execute a stable light quantum control and to improve the performance by controlling the light quantum of emitted laser light, based on the output of a light quantum detecting circuit part. CONSTITUTION:A start mark and an end mark of a bar-code 8 are recognized by a bar-code recognizing part 13 and inputted to an emitted light quantum control part 5, and based on these recognizing signals, the emitted light quantum of a laser light oscillating part 1 is controlled. Accordingly, until the end mark is recognized after the start mark of the bar-code is recognized, the emitted light quantum is not controlled but held to a prescribed constant value, and after the end mark is recognized, the emitted light quantum is controlled.