baber/WOPTO huggingface dataset:
Patent JP-2001085800-A (JP)
Title: Semiconductor optical amplifier module, and, optical communication system
Inventor: RI EIKON
IPC: B82Y20/00
Filed: 1999-09-09
Abstract: PROBLEM TO BE SOLVED: To increase the gain-bandwidth product of a semiconductor optical amplifier module, by dividing by an optical demultiplexer an optical signal including a plurality of wavelength components into the optical signals of the respective wavelength components, and by amplifying respectively by semiconductor optical amplifiers the optical signals having different wavelengths from each other, and further, by multiplexing by an optical multiplexer made of semiconductor materials the amplified optical signals having the respective wavelengths. SOLUTION: An input optical waveguide 3, an optical demultiplexer 4, output optical waveguides 5, a plurality of optical amplifiers 7, input optical waveguides 9, an optical multiplexer 11, and an output optical waveguide 12 are provided in succession to connect them optically with each other. The optical demultiplexer 4 comprises, e.g. the structure of an arraywaveguide diffraction gating. Also, the optical multiplexer 11 comprises the array- waveguide diffraction gating of the opposite structure to the one of the optical demultiplexer 4. Then, optical signals λ1-λN having the respective wavelengths demultiplexed by the demultiplexer 4 are amplified respectively by the respective optical amplifiers 7.  In this way, the wavelength multiplex signal including a plurality of wavelength signals is demultiplexed by a spatial division to amplify the respective wavelength signals by the different optical amplifiers 7. Thereby, the effective gainbandwidth product of an optical amplifier module can exceeds the gainbandwidth product of each optical amplifier.
Patent JP-H08125884-A (JP)
Title: Pll circuit
Inventor: NISHIMURA EIZO
IPC: H04N5/06
Filed: 1994-10-20
Abstract: PURPOSE: To extend the lock range of a PLL circuit to generate a system clock to be used for video digital processing. CONSTITUTION: A voltage controlled oscillation circuit 4 to generate the first clock signal of required frequency, a frequency converting part 5 to convert the frequency of the first clock signal and output it as the second clock signal of the required frequency, a frequency divider 6 to frequency-divide the second clock signal into the required frequency, a phase comparing part 2 to phase- compare the clock signal from the frequency divider and a horizontal synchronizing signal S1, a low pass filter 3 to take an oscillation frequency control signal out of phase comparison output from the phase comparing part and impress the same oscillation frequency control signal to the voltage controlled oscillation circuit, a frequency comparing part 7 to compare the horizontal synchronizing signal and the second clock signal and output the signal based on this comparison,  and a control part 8 to control the frequency converting part so that the second clock signal becomes the required frequency on the basis of a compared result by the frequency comparing part are provided.
Patent JP-H04133319-A (JP)
Title: Gaas wafer
Inventor: TAKEUCHI RYOICHI
IPC: H01L21/265
Filed: 1990-09-25
Abstract: PURPOSE:To form an active layer, by an ion implantation method, which is provided with the same steepness at the interface between the active layer and a substrate as that by an epitaxial method by a method wherein a carrier concentration profile is controlled by the compensation effect of p-type impurities and n-type impurities whose diffusion coefficient is small. CONSTITUTION:Silicon ions (<29>Si<+>), as n-type impurities, whose diffusion coefficient at 850 deg.C in a GaAS crystal is about 1X10<-5>cm<2>/s are implanted into the whole surface of a semi-insulating GaAs single-crystal substrate by using an ordinary ion implantation apparatus. In addition, carbon ions (<12>C<+>), as p-type impurities, whose diffusion coefficient at 850 deg.C in the GaAs crystal is at a little less than 1X10<-5>cm<2>/s are implanted by using the same method as that for silicon. At this time, the peak concentration of the n-type impurities satisfies the formula I. In order to electrically activate the impurities after their implantation, a heat treatment is executed in an AsH3 atmosphere. Thereby, an active layer which is excellent in steepness indispensable for a high-performance field- effect transistor can be formed by utilizing an ion implantation method.
Patent JP-H02104740-A (JP)
Title: Weaving by water jet loom
Inventor: HIROOKA AKIO
IPC: D03D23/00
Filed: 1988-10-13
Abstract: PURPOSE:To inhibit propagation of bacteria, etc., and occurrence of whitewash during weaving by equipping a water jet loom with a water-soluble glass plate containing an antibacterial metal so that the glass plate may be in contact with water jet or with water before injection. CONSTITUTION:A water-soluble glass plate composed of a network formation oxide such as SiO2 and a network modification oxide such as K2O and containing an antibacterial metal such as Ag2O or CuO in an amount of 1-50wt.% (calculated as oxide) is attached, preferably to a scattering-water proof cover at the part of reed of a water jet loom so that the glass plate may be in contact with water jet or with water before injection. Weaving is carried out under such a condition that the amount of the antibacterial metal eluted is >=0.01ppm (preferably 1-50ppm).
Patent JP-H01164936-A (JP)
Title: Apparatus for receiving and feeding film disc
Inventor: BERUNTO PAIRUHAMAA
IPC: G03B27/32
Filed: 1988-10-13
Abstract: PURPOSE: To simplify the device by rotating a disk receiver including the film disk by hand or easy crank driving. CONSTITUTION: The disk receiver 5 is fitted rotatably onto a slider 7 which is slidable in the direction of a slot, and the slider 7 can be slid forward and backward by hand or a motor, for example, by using a crank swing arm 8. There is cuts 4a in the circumferential edge of the film disk 4, and latches 9 with springs for positioning frames at an aperture opening 2 are related. Further, thrust latches 10 and 11 are provided for holding the rotation of the film disk 4 in a certain direction at the time of the forward and backward movement of the disk receiver 5. Then a frame rotates and moves to the aperture opening 2 by the reciprocal movement of the film disk 4 and the positioning latch 9 falls in the cut 4a in the edge related to the frame.
Patent JP-H06111892-A (JP)
Title: Coaxial cable connector
Inventor: MIURA MOCHIHARU
IPC: H01R9/05
Filed: 1992-09-25
Abstract: PURPOSE:To provide a relatively-easy-to-assembly and low-cost coaxial cable connector under-carpet use. CONSTITUTION:A clamping plate 10 with plural stripes 10a, 10b is attached to the coaxial cable guide end of a connector portions 23' to which a coaxial cable 21 used under-carpet is connected. When the coaxial cable 21 is connected to the connector portion 23', the strip 10a of the clamp plate 10 is bent to the side of the coaxial cable 21 to fix the coaxial cable 21 to the clamp plate 10. The strip 10b is bent to the opposite side of the coaxial cable 21 to fix an external conductor 21c for the coaxial cable. Only by attaching the clamp plate 10 to an usual coaxial cable connector, the connector corresponding to the coaxial cable for under-carpet use is made up at a low cost.
Patent JP-H03116022-A (JP)
Title: Liquid crystal display panel
Inventor: AOKI KOJI
IPC: G02F1/1335
Filed: 1989-09-28
Abstract: PURPOSE:To improve the degree of freedom of a design, and also, to improve the power efficiency of a backlight, and moreover, to set a visual field angle to a wide angle by applying a phosphor to the display surface. CONSTITUTION:This liquid crystal display panel displays an image on the display surface by controlling the transmission of a light beam from a backlight, and provided with a phosphor applied to the display surface. In such a case, the light beam from the backlight transmits through a liquid crystal 5 by the transmission quantity based on a video signal, and irradiates the phosphor 13. Accordingly, the phosphor 13 emits light, and can display a color image on the display surface 12. In such a way, a visual field angle comes to a wide angle, and also, the power efficiency of the backlight is improved, and the degree of freedom of a design is improved.
Patent JP-S61134830-A (JP)
Title: Picture input device serving as pointing device
Inventor: OKI YUTAKA
IPC: G06F3/0354
Filed: 1984-12-06
Abstract: PURPOSE:To use a picture input device also as a mouse by delivering a pitch pattern obtained with an operation on a mat through a CCD to detect both the shift direction and shift amount by a circuit means. CONSTITUTION:A picture input device 10 contains a front wheel 11 and rear wheels 12 serving as the timing controllers together with a housing 10a containing a light emitting source 13, an opening part 14, a polarized beam splitter 15, a rod lens array 16 and a line sensor including a CCD 17. The signal is produced with the intermittent light passing through a slit disk 21 in response to the device 10 moved in the direction X on a mat where a fixed pitch line is drawn. At the same time, a pitch pattern is delivered to the CCD 17. This pitch pattern changes according tot he shift distance of the device 10. The change of the pitch pattern is read by the clock pulses for detection of both the shift direction and the shift amount of the device 10 is produced from those read and detection signals.
Patent JP-H01188273-A (JP)
Title: Manufacture of abrasive stone
Inventor: KAWADA KENZO
IPC: B24D7/06
Filed: 1988-10-11
Abstract: PURPOSE:To form a satisfactory surface finished shape of an abrasive piece by pouring fluid substance comprising diamond grains and stone powder kneaded with resin liquid into a recessed mold formed to the bottom face of a flexible tray-like body, putting a base on the resin for adhesion poured on the fluid substance and removing a polishing stone with the base from the mold after the resin for adhesion is hardened. CONSTITUTION:A recessed mold 2 for an abrasive piece 1 is formed with the bottom surface being horizontal. In the next step, a fluid substance 3 comprising proper quantity of diamond grains and stone powder 2 kneaded with resin liquid is poured into the recessed mold 2 to be gelled. On the fluid substance, resin for adhering base and others are poured, and a base B is put on the resin to be adhered and hardened. After that, the state that the polishing piece 1 is adhered, i. e., polishing stone with the base is removed from a tray-like body A.
Patent JP-2000087800-A (JP)
Title: Cylinder block for v-engine
Inventor: SAWAKI MIKITO
IPC: F16C9/02
Filed: 1998-09-10
Abstract: PROBLEM TO BE SOLVED: To provide a cylinder block for V-engine which can inhibit generation of noise by transmission of vibration energy via bulk portions for supporting a crank shaft, while avoiding weight increase. SOLUTION: An oil drop hole 6 is formed in each end of bulk portions 2a, 2b which intersects a block wall 1a. A wall portion 7a formed on the cylinder side of each end of the bulk portions 2a, 2b has a thickness larger than a wall portion 7b on the other side. Specifically, the oil drop hole 6 is opened in a position displaced to the side of the wall portion 7b. Thus, the wall on the side which receives larger input of vibration energy is reinforced. Therefore, noise caused by transmission of vibration energy can be reduced, and the wall on the other side which receives relatively smaller input of vibration energy can be prevented from having an excess thickness.
Patent JP-2001082050-A (JP)
Title: Entrance airtight device for warehouse
Inventor: SUZUKI TAKESHI
IPC: E06B7/16
Filed: 1999-09-10
Abstract: PROBLEM TO BE SOLVED: To reliably keep airtightness between an entrance and the cargo room of a small motor truck or a large motor truck. SOLUTION: A head pad 15, a bottom pad 16, and right and left side pads 17 are fitted to the peripheral edge of an entrance, an intermediate pad 18 is fitted between the right and left side pads 17, and the intermediate pad 18 is made vertically movable between an upper position kept in contact with the lower face 15a of the head pad 15 and a lower position kept in contact with the upper face 16a of the bottom pad 16. For a small motor truck, the intermediate pad 18 is located at the upper position to reliably keep airtightness between a cargo room and the entrance 13. For a large motor truck, the intermediate pad 18 is located at the lower position to reliably keep airtightness between a cargo room and the entrance 13.
Patent JP-H04141986-A (JP)
Title: System of driving fluorescent lamp or lighting apparatus by variable cycle and bridging lamp receiving dc polarity
Inventor: TAIIHAA YAN
IPC: H05B41/292
Filed: 1990-09-26
Abstract: PURPOSE: To eliminate weak points that are light cycle flickering phenomenon of an fluorescent lamp driven by AC power and abrasion of an electrode at one side, by activating a DC fluorescent lamp or a lighting equipment with high frequency cycle bridging, and by lighting a lamp continuously with cycle bridge lamp receiving porality with a comparatively low frequency. CONSTITUTION: A porality signal setting device 104 drives a porality interchange switch 102 by forming a HIGH or LOW signal of a cycle bridge with power supply instantaneous porality in an instance of power transmission or arcing noise signal, or as its own clock pulse, and sets plus and minus poralities of both lamp ends of a lamp set 103. The lamp is driven by one time track state signal with a comparatively low frequency, and an operation of the interchange porality switch 102 is controlled by a signal with a comparatively low cycle, a DC power cycle bridge is input in the lamp set and the ratios of making the both lamp ends either plus or minus during a concentrated long time usage become nearly equal. Thereby, as well as deterioration of one side of the clamp can be prevented, it is also prevented that a brightness cycle pulse formed with AC as a power source hurts eyes.
Patent JP-H02103625-A (JP)
Title: Decimal multiplication system
Inventor: MAKITA AKIHISA
IPC: G06F7/496
Filed: 1988-10-12
Abstract: PURPOSE:To minimize production of futile multiples to improve the calculating speed of decimal multiplication by finding combinations of numerals used in a multiplier after checking each digit of the multiplier and producing multiples of a multiplicant used for the decimal multiplication by the minimum number including the combinations. CONSTITUTION:This decimal multiplication system is constituted of registers 1 and 2, a decimal adder/subtractor 3, register file 4, address register 5, address adder 6, digit shifter 7, operand register 8, decoder 9, and control circuit 10. Then combinations of numerals used in a multiplier are found by checking each digit of the multiplier and multiples of a multiplicant used for decimal multiplication are produced by the minimum number including the combinations. Therefore, futile unused multiples of a multiplicant are not found and the calculating speed of decimal multiplication can be improved.
Patent JP-H10100050-A (JP)
Title: Method and device for working wafer chamfering part
Inventor: HASEGAWA FUMIHIKO
IPC: B24B9/00
Filed: 1996-09-27
Abstract: PROBLEM TO BE SOLVED: To uniformly and softly grind a chamfered part by softly grinding an orientation flat part, an outer circumferential part and a corner part of a wafer while the rotational speed of the wafer is changed according to the softly grinding position of the orientation flat part, the outer circumferential part and the corner part. SOLUTION: A wafer softly grinding position judging device 22a calculates the softly grinding position by the detection signal Xw to be inputted from a wafer softly grinding position detector, judges whether the softly grinding position is an orientation flat part, an outer circumferential part, or a corner part, and transmits the corresponding judged signal (the orientation flat part, the outer circumferential part, or the corner part) based on the softly grinding position to a wafer rotational speed computing unit 22d. In the wafer rotational speed computing unit 22d, the corrected value is taken out from a memory 22e based on the judged signal of the orientation flat part, the outer circumferential part, or the corner part, and the wafer rotational speed is operated based on the corrected value.
Patent JP-2001086625-A (JP)
Title: Switch box detector for wiring
Inventor: NAKAGAWA TOSHIYUKI
IPC: G01V3/00
Filed: 1999-09-10
Abstract: PROBLEM TO BE SOLVED: To provide a switch box detector for wiring capable of determining a position where a member to be detected is mounted on the upper, lower, or central part of the switch box for wiring mounted on the back side of a wall, detecting the position of the switch box for wiring precisely, and marking the position of the member to be detected on the wall material precisely. SOLUTION: This switch box detector 5 for wiring is formed so that magnetically operating reed switches 7a, 7b, 7c for detecting members to be detected 2a, 2b, 2c may be mounted on a position facing the upper and lower ends and center part of a switch box 3 for wiring in the body 6 having a roughly rectangular parallelepiped so as to be roughly perpendicular to the bottom surface of the body 6 on the same line one by one, displays 8a, 8b, 8c such as a light emitting diode which flashes when the reed switches 7a, 7b, 7c operate may be mounted on the upper surface of the body 6 right above the respective reed switches 7a, 7b, 7c, and through holes 9a, 9b, 9c for inserting a marking member 10 are formed near the read switches 7a, 7b, 7c.
Patent JP-S62115433-A (JP)
Title: Copying device
Inventor: SAKAMA HARUO
IPC: G03G21/00
Filed: 1985-11-15
Abstract: PURPOSE:To obtain a copying device capable of copying with a desired accurate magnification by providing a copy editer with a function which calculates the copy magnification in accordance with a ratio of distances of designated positions to set the magnification of a copying machine when optional positions are inputted to a coordinate input plate of the copy editer. CONSTITUTION:In case of position designation, x1-x4 are inputted in order based on a figure abcd on an ordinal 21 to be edited. x1 and x2 are positions of the point (a) or (d) and the point (b) or (c) of the original figure to be edited, and x3 and x4 are positions of a point A or D and a point B or.C when a figure having a desired size after editing is denoted as ABCD. The input of 4 points is detected by a coordinate detecting circuit 8, and X-axis and Y-axis address data are sent to a CPU 9, and the result of magnification operation is transferred to a CPU 11 in the next stage as magnificartion data. The CPU 11 in a variable copy magnification copying machine 10 performs the control of each part required for copying the original with the designated magnification.
Patent JP-H08119952-A (JP)
Title: Isatoic acid anhydride derivative
Inventor: KAWAMURA HIROYUKI
IPC: A61P43/00
Filed: 1994-10-21
Abstract: PURPOSE: To obtain an isatoic acid anhydride derivative and its salt useful for medicines, especially as an inhibitor of neutrophilic esterases. CONSTITUTION: This compound is expressed by formula I (R1 is H or a lower alkyl group; X is CO, SO2 , etc.; R2 is a lower alkyl group, a lower alkoxy group, etc.), e.g. 7-(benzoylamino)isatoic acid anhydride. The compound of formula I is obtained by carrying out the cyclizing, reducing and condensing reactions of a compound of formula II (R1 is H or methyl), e.g. 4-nitroanthranilic acid or 4-nitro-6-methylanthranilic acid as a starting compound. The cyclizing reaction is preferably carried out by reacting, e.g. the compound of formula II with triphosgene in an organic solvent such as tetrahydrofuran at ambient temperature and the reducing reaction is preferably conducted by catalytically reducing the resultant cyclized compound of formula II in the presence of palladium carbon or a palladium hydroxide catalyst in an organic solvent such as methanol in a hydrogen atmosphere.  Furthermore, the condensing reaction is preferably carried out by reacting the reduction product with an acid halide in the presence of a base such as triethylamine in an organic solvent such as tetrahydrofuran at ambient temperature.
Patent JP-H1189322-A (JP)
Title: Rice seed-clogging detector in direct seeding machine
Inventor: NASU TAKESHI
IPC: A01C7/08
Filed: 1997-09-22
Abstract: PROBLEM TO BE SOLVED: To provide the subject apparatus having a simple structure, exhibiting a high accuracy, and capable of quickly detecting the state of clogging by placing an optical sensor-type clogging detector which detects clogging in a tube for flowing down rice seeds. SOLUTION: This apparatus is constructed in such a manner that rice seeds are directly seeded on a field through a tube 21 for flowing down rice seeds from a rice seed hopper, and an optical sensor-type clogging detector 32 which detects the state of clogging in the tube 21 for flowing down rice seeds by intercepting light path is attached on the tube. Further, the above-mentioned clogging detector 32 can be placed on the upper-side inner wall of the tube 21 for flowing down rice seeds which is placed in an inclined state. Furthermore, a hood 34 can be placed so that the rice seeds which flow down near the upper- side position where said clogging detector 32 is placed by-pass the detecting means 32.
Patent JP-H04137836-A (JP)
Title: Multi-channel optical signal transmitter
Inventor: WASHISAWA TAKUMI
IPC: H04J14/08
Filed: 1990-09-28
Abstract: PURPOSE:To transmit transmission of plural optical signals at a same area and a same time by allowing each of plural slave sets to send a data to a master set sequentially within a sampling period after a predetermined time for each slave set based on a sampling signal. CONSTITUTION:A numeral arithmetic circuit 11 of a master set 1 outputs a sampling signal S at a predetermined period To and slave sets 21-24 receives an optical signal from the master set 1 and extracts the sampling signal S from an optical signal received by a filter circuit 24. A numeral arithmetic circuit 21 receives the sampling signal S to set an internal timer and outputs a data signal to the master set 1 within the period To after a predetermined different time from each of the slave sets 21-24. Thus, transmission of plural optical signals is attained at a same area and a same time.
Patent JP-S62114072-A (JP)
Title: Image reader
Inventor: HAMAZAKI TOSHIYA
IPC: G06Q40/02
Filed: 1985-11-13
Abstract: PURPOSE:To set an optional mask pattern by storing a mask pattern in a memory, reading it out in synchronizing with a scan of an image sensor, and taking AND to an output of the image sensor, and executing a mask processing thereby. CONSTITUTION:Data (mask pattern) for setting both the timing for transmitting a detecting signal of an image sensor 2 to an A/D converter 34, and the timing for masking it are stored in a P-ROM31. An output of a counter 38 which is started as soon as a scan of the image sensor 2 is started, and counts 256 when the scan has been ended is inputted to a lower rank address of the P-ROM31, therefore, a detection range of the image sensor 2 is divided into 246 and brought to a mask control, and when an address which has stored '1' in the bit is outputted, it is masked by an AND circuit 33.