baber/WOPTO huggingface dataset:
Patent JP-H03250682-A (JP)
Title: Frequency stabilized laser light source
Inventor: AKIYAMA KOJI
IPC: H01S5/068
Filed: 1990-02-28
Abstract: PURPOSE:To obtain a non-modulation highly stable frequency optical output by controlling the central frequency of oscillation of a semiconductor laser by current modulation to an absorption line frequency highly accurately in a highly stabilized frequency state, and further controlling an oscillation frequency of the semiconductor laser to one shifted a predetermined frequency from the central frequency of output light from the semiconductor laser. CONSTITUTION:A semiconductor laser 1 is current modulated by a modulation frequency fm sinusoidal wave, output light from which is emitted via a beam splitter 2 and is combined by a beam splitter 13 with output light from a semiconductor laser 11 emitted via a beam splitter 12. The light emanating from the beam splitter 13 enters an optical detector 14 and is detected as a beat signal. The output is removed through a low pass filter 161 of a control part 16 in its modulated frequency component, and thereafter is added to bias voltage VB in an adder circuit 162 and is fed back to the semiconductor laser 11 via a PI control circuit 163. Thus, oscillation frequency of the semiconductor laser 11 is controlled to a point shifted by a predetermined frequency from the absorption line with no modulation and is derived externally via the beam splitter 12.
Patent JP-2000248448-A (JP)
Title: Production of jacquard knit fabric in circular knitting machine
Inventor: YORISUE SHOZO
IPC: D04B1/02
Filed: 1999-02-25
Abstract: PROBLEM TO BE SOLVED: To provide a uniform pile jacquard knit fabric capable of generating no irregularities in forming pile loops. SOLUTION: This production of jacquard knit fabric in a circular knitting machine is to tighten a pile needle loop on a lower sinker nose surface (5c) by forward movement of the sinker toward the inside during shifting from a last region to a first region (X), subsequently move the sinker backward toward the outside to drop a loosened pile needle loop on the sinker nose (5e) and tighten the dropped pile needle loop on the sinker nose (5e) by forward movement of the sinker toward the inside. It is preferable to move the sinker toward the inside and outside in 1.5-3 mm for tightening the pile needle loop.
Patent JP-H04268033-A (JP)
Title: Production of beryllium-copper alloy
Inventor: UCHIDA MUNENORI
IPC: B22D27/04
Filed: 1991-02-21
Abstract: PURPOSE:To keep a molten alloy at <=1,100 deg.C at the beginning of casting when a Be-Cu alloy contg. 1.5-2.0wt.% Be is produced. CONSTITUTION:The amt. of beryllium carbide contained in a Be-Cu alloy product contg. 1.5-2.0wt.% Be in the alloy is reduced by keeping a molten alloy at <=1,100 deg.C at the beginning of casting.
Patent JP-H02226545-A (JP)
Title: Rotational synchronizing signal detection circuit
Inventor: KAMIMURA MASARU
IPC: G11B19/28
Filed: 1989-02-27
Abstract: PURPOSE:To obtain a rotational synchronizing signal with high accuracy by controlling a variable impedance connected in parallel with a Schmitt trigger circuit to input the regenerative signal of a recording part and a reference signal relating to the high frequency component of the regenerative signal. CONSTITUTION:The regenerative signal S relating to the positive and the negative side envelopes of the recording part E of a disk D from a photoelectric conversion element 5 via an amplifier 6, a buffer amplifier 7, a positive side envelope detector 8, and a negative side envelope detector 9 are inputted to a matrix circuit 12 via buffer amplifiers 10 and 11. The reference signal Ss of intermediate level can be obtained since resistors 12a and 12b are same. The signal Ss is inputted to the Schmitt trigger circuit 14 via a buffer amplifier 13, and the regenerative signal is inputted from the amplifier 7 to the negative terminal of the circuit, and the signal Ss is compared with the signal S, and the signal is turned on/off relating to the regenerative signal S setting the signal Ss as a threshold value. Meanwhile, the regenerative signal S is inputted to a filter 15, a detector 16, and a differential amplifier 17, and differential amplification with the reference signal Ss is applied, and the signal relating to the high frequency component is inputted to an amplifier 14 via a FEP 18, then, the threshold value is changed.
Patent JP-S53132954-A (JP)
Title: Data transfer controller
Inventor: ONIZUKA NOBUHIKO
IPC: G06F3/00
Filed: 1977-04-25
Abstract: PURPOSE: To shorten a latency time caused by the confliction among memory access operations from a plural number of cahnnels to the same bank, by providing memory buffer registers MBR, conventionally common-used by a plural number of channels, corresponding to channels. 
     COPYRIGHT: (C)1978,JPO&Japio
Patent JP-S55139896-A (JP)
Title: Purifying apparatus for contaminated water
Inventor: SUMINO TATSUO
IPC: C02F3/20
Filed: 1979-04-17
Abstract: PURPOSE: To efficiently carry out the purification of water and settling and separation of activated sludge, by inclining and juxtaposing plural bubble guiding board in purification vessel so as to form the gap of the above board in layer and adjoining the lower end part of the guide board to the air dispersion opening.  
     CONSTITUTION: Air supplied from the air dispersion tube 3, is caught at the lower side of the bubble guide board 2 immediately after raising up in the purification vessel 1 filled up with contaminated water, and is raised along the wall face of the board 2 slowly. The water passages at the time of contaminated water treatment in the stratal gap a between the guiding plate 2, are formed by each of a gas phase domain 8 of oxygen, a multiplication domain 9 of the activated sluge and a sedimentation domain 9 of the activated sludge and a sedimentation domain 10 of the activated sludge in the order of the downward movement of the bubbles 7. The dissolution and diffusion domain 11 of oxygen is composed of both domains 8 and 9. Because of the thickness of the above each domain is varied by the gap a and the inclination angle θ of the guiding plate, these factors is to be selected suitably. 
     COPYRIGHT: (C)1980,JPO&Japio
Patent JP-S56144505-A (JP)
Title: Manufacture of magnetic material
Inventor: SAKAI TAKEAKI
IPC: H01F1/22
Filed: 1980-04-11
Abstract: PURPOSE:To obtain the magnetic material which can easily be processed to a thin plate and in a desired shape by uniformly mixing metallic powder with the binder of resin group, a dispersing agent, plasticizer, and organic agent wherein the metallic powder is made slurry with suitable viscosity and a green sheet is formed by a doctor blade method. CONSTITUTION:The metallic powder is uniformly mixed with the binder by a polyvinyl butyral resin, dispersing agent, plasticizer and the organic agent such as methy ethyl ketone, methanol or the like and the metallic powder is made slurrry with suitable viscosity. The slurry is continuously flowed on a moving Myler film and the green sheet is formed on the film by a doctor blade method. Next, the green sheet or a desired-shaped one is heated under the atmosphere at a temperature of 150-400 deg.C to perform binder exclusion. After that, the green sheet or the desired- shaped one is sintered under reduction atmosphere and a thin plate magnetic material or a desired-shaped magnetic body having good magnetic characteristics is made.
Patent JP-2000247234-A (JP)
Title: Operation directional line trouble detecting method and device
Inventor: AIKAWA KOJI
IPC: B61L19/06
Filed: 1999-02-25
Abstract: PROBLEM TO BE SOLVED: To prevent a span of time for stopping a train from being prolonged by detecting a fact that trouble has occurred in an operation directional line. SOLUTION: This detector is laid down in an interval between two stations A and B provided with each of interlocking devices 1 and 2, and it is featured that each electric current flowing into three operation directional lines 3a, 3b and 3c to be used in a single-track automatic block system or a restricted automatic block system of a railroad signal is always monitored by four direct current sensors CT1 to CT4 at each specific component circuit to which both the interlocking devices 1, 2 relating, thereby detecting a fact that the operation directional lines are out of order when this current value is lowered to less than the setting value.
Patent JP-H06261387-A (JP)
Title: Method and device for reproducing acoustic sound
Inventor: YAMAZAKI SUSUMU
IPC: B60R11/02
Filed: 1993-03-09
Abstract: PURPOSE:To automatically change to the adjusted acoustic characteristic by reading TOC information of a recording medium, storing it with the acoustic characteristic selected by a listener in a storage means, and reproducing the recording medium according to the storage contents. CONSTITUTION:A system microcomputer 1 is provided with a RAM storing the TOC (Table of Contents) information, the order of piece of music, and the acoustic characteristic. A listener directly controls a panel control section 2 which sets and changes the acoustic characteristic. It is provided with a microcomputer 3 controlling DSP(digital signal processor) or the like. It reads the TOC information of a CD source and it is stored in the RAM in a system microcomputer 1 with the acoustic characteristic selected by the listner, and the CD source is reproduced based on the acoustic characteristic stored in the RAM. Thus, the acoustic sound is reproduced based on the acoustic characteristic stored with the TOC information and when the CD source or the piece of music is changed, the acoustic characteristic is automatically adjusted by the listner.
Patent JP-S60192655-A (JP)
Title: Thermal printer
Inventor: ISOBE MINORU
IPC: B41J2/335
Filed: 1984-03-15
Abstract: PURPOSE:To prevent wrinking of and damage to an ink donor ribbon with a simplified total mechanism by a method wherein a thermal head equivalent to one page is fixed and an ink donor ribbon part is unitized as it corresponds thereto. CONSTITUTION:A surface thermal head 1 having a heat generating element equivalent to one page is arranged stationary and an ink donor ribbon 3 having a plurality of colors running corresponding to the surface thermal head 1 is unitized to enable the detection of color zones with a detector. The housing of the printing paper 7 is so unitized that the printing paper 7 will not abut on the ink donor ribbon 3 during the non-printing time is made to abut on the ink donor ribbon 3 during the printing time to complete the printing for one page and then, discharged. With such an arrangement, printing by the page unit is possible and the surface thermal head 1 and the printing paper 7 correspond to each other in a tationary state thereby eliminating the control of corresponding positions thereof while simplifying the construction of the equipment by the unitization.
Patent JP-H08249873-A (JP)
Title: Magnetic disk device
Inventor: KORIYAMA HIROSHI
IPC: G11B33/14
Filed: 1995-03-08
Abstract: PURPOSE: To prevent the grease sealed in bearings from being splashed into a device by high-speed rotation of a carriage according to a seek instruction. CONSTITUTION: The bearing parts within an arm assembly which supports an arm assembly 7 mounted with a magnetic head 6 at a revolving shaft 8 via plural pieces of bearings are internally provided with vent holes 12. These vent holes penetrate down to the position on the downstream side of in the rotating direction of a magnetic disk from the inner spaces 14 of plural pieces of the bearings facing each other in this arm assembly.
Patent JP-H03250922-A (JP)
Title: Phase locked loop circuit
Inventor: FUKUKAWA SHINICHI
IPC: H03L7/093
Filed: 1990-02-28
Abstract: PURPOSE:To adjust the loop characteristic of an entire circuit very easily and quickly without replacement of components in an amplifier especially even in the case of the dispersion in the loop characteristic by providing an amplifier whose gain in varied with an external control voltage. CONSTITUTION:An amplifier 1 is provided with a signal amplification function amplifying a prescribed signal sent from a loop filter 12 and an amplification factor variable setting function varying its own amplification factor with an external control signal. The output signal of the amplifier 1 is inputted to a voltage controlled oscillator 14 to vary the output frequency of the voltage controlled oscillator 14. Thus, the transfer function H(omega) of this phase locked loop circuit is varied. Thus, the loop characteristic of the phase locked loop circuit is varied. Then the adjustment of the loop characteristic is easily realized by using a field effect transistor(TR) without the replacement of components.
Patent JP-H06267927-A (JP)
Title: Surface treatment of inse semiconductor device
Inventor: OSAWA SHIGERU
IPC: H01L21/306
Filed: 1993-03-10
Abstract: PURPOSE:To preserve an InSe anodized film and to make it possible to form a photodiode, which has not a parasitic resistance and has good electrical characteristics, by a method wherein a treatment is performed on the exposed surfaces of the anodized film and an InSb region, which are formed in one part of the surface of an InSb substrate, with the mixed solution of bromine and an alcohol and the like. CONSTITUTION:A P-type InSb region 12 is selectively formed in the surface of an N-type InSb substrate 11 and a photoresist film 13 is formed on the surface of the region 12. Then, an anodized film 14 is selectively formed using the InSb region 12 as an anode and after that, the film 13 is removed. Then, a surface treatment is performed with the mixed solution of bromine and an alcohol and a natural oxide film 15 is removed. Whereupon, the region 12 is also etched in a thickness of 100Angstrom  or thereabouts, but any problem is not caused on diode characteristics and moreover, the film 14 is not etched at all in this treatment. Accordingly, the film 15 on the surface of the region 12 is removed, but the film 14 on the region 12 is held and the good diode characteristics having not a parasitic capacitance are obtained.
Patent JP-H11251764-A (JP)
Title: Case for electronic equipment
Inventor: KOHO YASUYUKI
IPC: H05K5/03
Filed: 1998-03-02
Abstract: PROBLEM TO BE SOLVED: To make an exact engagement possible which hardly causes shift or rattle, by forming an edge engagement section of an upper and a lower covers from a flat section and a slant section, with the slant sections of the upper and the lower cover formed at the same angle. SOLUTION: In an edge section of an upper cover 1A and a lower cover 1B, a flat section 11 and a slant section 12 are formed. When the upper cover 1A and the lower cover 1B are engaged with each other, a space 13 (for example, about 1 mm) is formed as shown in the figure (c). The space 13 is for absorbing some shift or rattle based on an error generated at the time of, for example, manufacturing a mold. By using the flat section 11 and the slant section 12 formed on the edge section of each cover, the upper cover 1A and the lower cover 1B can be surely engaged with each other and then can be surely fixed to each other by a screw 2.
Patent JP-H10226280-A (JP)
Title: Housing device for automobile telephone
Inventor: KIYOMIYA YASUO
IPC: B60R11/02
Filed: 1997-02-17
Abstract: PROBLEM TO BE SOLVED: To improve operability by having a housing case installed in the center console of an instrument panel so as to be freely taken in and out and housing a telephone set in the housing case. SOLUTION: A housing device 100 for an automobile telephone set is attached to a center console part provided in the center of an instrument panel in a room. The housing device 100 includes a casing 150b fixed to the center console part and a housing case 150a provided to be freely taken in/out like a drawer with respect to the casing 150b. The casing 150b and the housing case 150a are formed to be 1-DIN sizes of vertical lengths 56mm, horizontal lengths 178mm and depths 126mm. Since it is not necessary to directly face the horizontal side for operation, operability is improved and safety is increased because a front visual field is not blocked.
Patent JP-S59177121-A (JP)
Title: Isotope separation apparatus
Inventor: KAZAWA YOSHIAKI
IPC: B01D59/48
Filed: 1983-03-25
Abstract: PURPOSE:To provide the titled apparatus low in power consumption and easy to handle, constituted so as to separate an isotope by allowing gas in a plasma state ionized by a high frequency source for an electronic cyclotron to resonate to the electromagnetic wave of the high frequency source of the electronic cyclotron. CONSTITUTION:In an isotope separation apparatus wherein a DC magnetic field is generated by the super-conductive coil 1 provided around a cylindrical vacuum container 7, the gas generating part 11 for generating gas containing an atom to be separated such as uranium provided in the above-mentioned container 7 is heated by an electromagnetic induction heating coil 21 and laser 20 and an electromagnetic wave is applied to the gas in the generated magnetic field through an antenna 13 by the high frequency source of resonance frequency or the higher harmonic thereof of an electronic cyclotron to generate ionized plasma which is, in turn, resonated to the electromagnetic wave applied through an antenna 15 by the high frequency source 14 of ion cyclotron resonance frequency or the higher harmonic thereof and isotopes having different masses such as uranium 235 or 238 are respectively separated by collectors 5, 6.
Patent JP-S61208338-A (JP)
Title: Faulty branch disconnecting system in ring transmission system
Inventor: FUSE MASAHIRO
Filed: 1985-03-12
Abstract: PURPOSE:To ensure a normal ring transmission line by providing a means for supervising the normality of branch lines and terminal devices under control and a means for by-passing the branch lines to each line concentrator and by-passing automatically the branch line when a fault takes place in the branches. CONSTITUTION:Serial signal processing sections 27-29 are connected serially to branch lines 9-11 through relay switches 21-23, decode the timing information and a input signal from the input side respectively to detect the control frame and if any of them is not detected, a function informing a fault to a faulty branch detecting section 30 is provided by a faulty branch detection indirect connection line 31. When a relay control section 32 receives the notice of a faulty branch line number from the section 30, the output of relay switch circuits 21, 22, or 23 corresponding to the faulty branch line is switched from the ring branch lines 9, 10 or 11 to a fault branch by-pass line 37, 38 or 39, a relay drive signal is given to a relay drive circuit 24, 25 or 26 via a signal line 34, 35 or 36.
Patent JP-2000252369-A (JP)
Title: Semiconductor device
Inventor: OKAWA SHIGEAKI
IPC: H04R19/01
Filed: 1999-02-25
Abstract: PROBLEM TO BE SOLVED: To obtain a semiconductor device which is suitable for driving an electret capacitor microphone by a method wherein one end of a parasitic capacitance caused by an expansion electrode requiring a large area is set at a high resistivity. SOLUTION: A semiconductor substrate 21 whose resistivity is at 100 to 5000 Ω.cm is prepared. A P-type well region 22 is formed on the substrate 21. A gate electrode 28, a source region 26 and a drain region 27 are formed on its surface. As a result, an analog MOSFET element (an input transistor) 29 is formed. Respective circuit elements are connected by electrode interconnections 39. An expansion electrode 40 is formed on an insulating film 38. The expansion electrode 40 is connected to the gate electrode 28 of the input transistor 29.
Patent JP-S60192423-A (JP)
Title: Cyclic majority decision coder and decoder
Inventor: EGURI SHIGEHARU
IPC: H03M13/00
Filed: 1984-03-14
Abstract: PURPOSE:To improve the error correction rate when an error bit number exceeds theoretically correctable numbers by obtaining a composite parity check result with respect to the entire reception series and using the maximum value as a threshold value of a majority decision element after the maximum value is obtained to attain error correction. CONSTITUTION:Composite parity check values A20.1-A20.5 are obtained as outputs 2a-2e of a composite parity check generating circuit 2 and inputted to a composite parity check result counter 7. An output 7a of the counter 7 and an output 8a of a maximum value register 8 are compared by a comparator circuit 9 and the content of the maximum value register 8 is rewritten by the output 7a only when an output 7a> an output 8a. This procedure is performed for each bit and the maximum value of the count value of the result of composite parity check is stored. Then a correction/check signal is selected to ''correction'', the similar processing as above is performed. That is, the comparator circuit 9 compares the outputs 7a and 8a, and only when 7a>=8a, an output 9a is fed to an EX-OR6 via an AND13. Thus, the error in a head bit r20 of reception data of a shift register 1 is corrected. That is, the comparator circuit 9 acts as a majority decision element taking the content of the register 8 as a threshold value.
Patent JP-H01223532-A (JP)
Title: Overflow/underflow processing circuit
Inventor: HACHIMAN YUICHI
IPC: G06F7/483
Filed: 1988-03-03
Abstract: PURPOSE:To simplify the constitution and to output a value corresponding to a designated rounding mode in a floating-point computing element by providing a gate circuit part and an output register part and using an RC generating circuit as a decoder. CONSTITUTION:A RC generating circuit outputs bits, which round a fixed-point part 1, in accordance with low-order bits lower than the least significant bit of the floating-point operation result displayed in the fixed-point part and the designated rounding mode. When the operation result overflows or underflows, a gate circuit 3 applies such parameters to the circuit 4 that the output of the circuit 4 controls an output register part 5 to select and output the value to be outputted in the designated rounding mode. Thus, the value to be outputted in accordance with overflow or underflow in the designated rounding mode is outputted from the register part 5 to whose control terminal the effective output from the circuit 4 is applied. That is, the circuit 4 is operated as the decoder, and the value corresponding to the designated rounding mode is outputted with simple constitution.
Patent JP-S58166851-A (JP)
Title: Communication system
Inventor: OOYA KOUICHI
IPC: H04L12/58
Filed: 1982-03-26
Abstract: PURPOSE:To improve the efficiency of operation for a primary communication circuit, by providing the storing devices of data, data communication devices and storage exchange devices containing exchanges to connect between the storing devices as well as between telephone end offices and an inter-office transmitting circuit to each communication station. CONSTITUTION:Communication stations A and B contains storing devices containing storing devices 7a and 7b which control the writing/reading of data to storage devices 10a and 10b, data communication devices 1a and 1b, and storage exchange devices 3A and 3B containing exchanges 3a' and 3b' which connect between the storing devices, between telephone terminals 2a and 2b and an inter-office transmitting circuit 6 and between the storage devices and the circuit 6 respectively. The exchange 3a' stores temporarily the data given from the device 1a to the device 10a via the device 7a and then stores it to the device 10b via the circuit 6, the exchange 3b' and the device 7b when the circuit 6 is not used by a telephone terminal. Then the exchange 3b' transmits the data stored in the device 10b to the device 1b. When a telephone terminal has a call, the exchange stops temporarily the transmission of data to the circuit 6 to give the preference to the audio communication. Thus a direct operation is secured for the audio communication.