Patents by Inventor Junzo Kawakami
Junzo Kawakami has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20100195322Abstract: In a light emitting device including a semiconductor light emitting element; a phosphor to be excited by light emitted from the semiconductor light emitting element; and an encapsulating resin including the phosphor and covering the semiconductor light emitting element, the phosphor included in the encapsulating resin suppresses a specific wavelength component for preventing a photosensitive material sensitive to a specific wavelength from reacting. An illuminating apparatus including a plurality of semiconductor light emitting elements includes a control section for suppressing a specific wavelength for preventing a photosensitive material sensitive to the specific wavelength from reacting. A clean room is equipped with such an illuminating apparatus.Type: ApplicationFiled: July 29, 2008Publication date: August 5, 2010Applicant: Sharp Kabushiki KaishaInventors: Junzo Kawakami, Tajij Morimoto, Fumio Kokubo
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Patent number: 6073054Abstract: An information processing system comprises a plurality of systems (1, 3, 4, 6) communicating through a transmission path (2) and performing a processing base on their own function. One of the plurality of systems acts as as an supervising system having a supervising function. The supervising system (1, 4) sets a goal for each of the plurality of systems, collects the processing result on each system and evaluates the processing result; and on the basis of the processing result, the supervising system sets a new goal for each system considering a goal of the entire system comprising said plurality of systems.Type: GrantFiled: October 2, 1995Date of Patent: June 6, 2000Assignee: Hitachi, Ltd.Inventors: Yasunori Katayama, Junzo Kawakami, Hiroyuki Kudo, Yoshiki Hirakouchi, Hiroaki Ishikawa
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Patent number: 6061609Abstract: An electrical power distribution monitoring system is provided for a power distribution line having a plurality of sections with a plurality of electrical loads connected to the power distribution line to form a power distribution network. The monitoring system has at least one sensor for at least one present electrical value at least one point of the network, and estimates electrical values for at least one section of the line in dependence on both of present electrical values measured by the sensor and data relating to past power consumption by loads connected to the line. Improved prediction of actual conditions in the distribution line can be obtained.Type: GrantFiled: August 5, 1999Date of Patent: May 9, 2000Assignee: Hitachi, Ltd.Inventors: Minoru Kanoi, Yuzuru Imamura, Saburou Yasukawa, Kiyoji Iwashita, Toru Takei, Hiroyuki Kudo, Junzo Kawakami, Kazuo Nishijima, Hiroshi Inoue
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Patent number: 5963457Abstract: An electrical power distribution monitoring system is provided for a power distribution line having a plurality of sections with a plurality of electrical loads connected to the power distribution line to form a power distribution network. The monitoring system has at least one sensor for at least one present electrical value at at least one point of the network, and estimates electrical values for at least one section of the line in dependence on both of present electrical values measured by the sensor and data relating to past power consumption by loads connected to the line. Improved prediction of actual conditions in the distribution line can be obtained.Type: GrantFiled: March 14, 1995Date of Patent: October 5, 1999Assignee: Hitachi, Ltd.Inventors: Minoru Kanoi, Yuzuru Imamura, Saburou Yasukawa, Kiyoji Iwashita, Toru Takei, Hiroyuki Kudo, Junzo Kawakami, Kazuo Nishijima, Hiroshi Inoue
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Patent number: 5930136Abstract: In order to control an apparatus, such as a rolling mill, a control device may use a pre-set operation pattern to generate a pre-set command signal, which is then modified. That first modification may be part of a feedback loop in dependence on the variation of a variable operation device of the apparatus, on a plurality of pre-set signals may be combined by fuzzy logic. Then the relationship between the modified pre-set command signal and the variation of the variable operation device is investigated to generate a compensation signal which is used to modify further the pre-set command signal. In a feedback loop, that further modification may compensate for changes in the operating point of the loop, due to changes in the apparatus being controlled. In a fuzzy logic arrangement, the compensation signal may be a further control pattern developed by the control device itself, which is combined with the pre-set patterns by fuzzy logic. The control device may be in the form of a series of modules.Type: GrantFiled: July 2, 1997Date of Patent: July 27, 1999Assignee: Hitachi, Ltd.Inventors: Masaaki Nakajima, Satoshi Hattori, Yutaka Saito, Yasunori Katayama, Yasuo Morooka, Junzo Kawakami
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Patent number: 5812389Abstract: An information processing system comprises a plurality of systems (1, 3, 4, 6) communicating through a transmission path (2) and performing a processing base on their own function. One of the plurality of systems acts as as an supervising system having a supervising function. The supervising system (1, 4) sets a goal for each of the plurality of systems, collects the processing result on each system and evaluates the processing result; and on the basis of the processing result, the supervising system sets a new goal for each system considering a goal of the entire system comprising said plurality of systems.Type: GrantFiled: June 5, 1995Date of Patent: September 22, 1998Assignee: Hitachi, Ltd.Inventors: Yasunori Katayama, Junzo Kawakami, Hiroyuki Kudo, Yoshiki Hirakouchi, Hiroaki Ishikawa
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Patent number: 5553003Abstract: In a control system equipped with a plurality of subsystems and a supervising subsystem for supervising these subsystems, a subgoal achievement performance is calculated by the subsystem using its own knowledge and its own condition with respect to a subgoal defined by the supervising subsystem, and the supervising subsystem controls a control system by utilizing the knowledge and conditions of the respective subsystems by applying a subgoal execution instruction to the subsystem based upon the calculation result. Since not only the knowledge but also the condition of the subsystems, proper controls can be realized in not only such a case that the supervising goal is directed to a static temporal aspect, but also such a case that the supervising goal contains a temporal element.Type: GrantFiled: March 11, 1993Date of Patent: September 3, 1996Assignee: Hitachi, Ltd.Inventors: Yasushi Harada, Yasunori Katayama, Junzo Kawakami, Tadayoshi Saitou, Chihiro Fukui, Yutaka Kokai, Shigeru Tamura
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Patent number: 5546503Abstract: In a neural network having neurons connected in a multi-layer, firstly, input signal sets are sequentially entered to statistically process the outputs of hidden neurons and determine the optimum number of hidden neurons. Secondly, while changing the input signal entered to each input neuron to the maximum change limit, the change of output values of the other input neurons are checked to thereby determine an unnecessary input neuron. Thirdly, the weights between input neurons and hidden neurons are set to be in correspondence with a hyperplane to enable pattern recognition.Type: GrantFiled: August 13, 1991Date of Patent: August 13, 1996Assignee: Hitachi, Ltd.Inventors: Shigeo Abe, Masahiro Kayama, Hiroshi Takenaga, Yasuo Morooka, Junzo Kawakami, Masao Takatoo
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Patent number: 5541832Abstract: In order to control an apparatus, such as a rolling mill, a control device may use a pre-set operation pattern to generate a pre-set command signal, which is then modified.That first modification may be part of a feedback loop in set command signal, which is then modified. That first modification may be part of a feedback loop in logic. Then the relationship between the modified pre-set command signal and the variation of the variable operation device is investigated to generate a compensation signal which is used to modify further the pre-set command signal. In a feedback loop, that further modification may compensate for changes in the operating point of the loop, due to changes in the apparatus being controlled. In a fuzzy logic arrangement, the compensation signal may be a further control pattern developed by the control device itself, which is combined with the pre-set patterns by fuzzy logic. The control device may be in the form of a series of modules.Type: GrantFiled: March 30, 1995Date of Patent: July 30, 1996Assignee: Hitachi, Ltd.Inventors: Masaaki Nakajima, Satoshi Hattori, Yutaka Saito, Yasunori Katayama, Yasuo Morooka, Junzo Kawakami
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Patent number: 5533168Abstract: In a data processing apparatus employing a neurocomputer suitable for obtaining an optimum combination problem, a weight is determined based upon a relative relationship between a constraint condition and an evaluation function, and it is so arranged as to obtain a solution having low energy with respect to a solution obtained from an energy function with employment of this determined weight by increasing a diagonal element of the energy function. It is possible to give a minimum value or a solution near this minimum value at a high speed with regard to any problems.Type: GrantFiled: March 6, 1995Date of Patent: July 2, 1996Assignee: Hitachi, Ltd.Inventors: Shigeo Abe, Junzo Kawakami
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Patent number: 5430642Abstract: In order to control an apparatus, such as a rolling mill, a control device may use a pre-set operation pattern to generate a preset command signal, which is then modified. That first modification may be part of a feedback loop in dependence on the variation of a variable operation device of the apparatus, on a plurality of pre-set signals may be combined by fuzzy logic. Then the relationship between the modified pre-set command signal and the variation of the variable operation device is investigated to generate a compensation signal which is used to modify further the pre-set command signal. In a feedback loop, that further modification may compensate for changes in the operating point of the loop, due to changes in the apparatus being controlled. In a fuzzy logic arrangement, the compensation signal may be a further control pattern developed by the control device itself, which is combined with the pre-set patterns by fuzzy logic. The control device may be in the form of a series of modules.Type: GrantFiled: June 4, 1991Date of Patent: July 4, 1995Assignee: Hitachi, Ltd.Inventors: Masaaki Nakajima, Satoshi Hattori, Yutaka Saito, Yasunori Katayama, Yasuo Morooka, Junzo Kawakami
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Patent number: 5349522Abstract: An AC system having, for example, a voltage source, an inductance and a load has connected thereto an apparatus for controlling the phase and amplitude of the voltage of the system. The instantaneous current and voltage in the AC electrical system are measured and power measurements derived therefrom. The power measurements may be instantaneous real and imaginary power, instantaneous active and reactive power, or active and reactive power averaged over less than one cycle. The power measurements are then used to derive phase related control values, on the basis of which control signals are generated to a converter. The action of the converter in accordance with the control signals thus controls the amplitude and phase of the voltage. By use of power measurements, it is not necessary to measure the phase of the voltage of the AC system.Type: GrantFiled: June 12, 1992Date of Patent: September 20, 1994Assignee: Hitachi, Ltd.Inventors: Hiroo Konishi, Hironari Kawazoe, Junzo Kawakami, Tomoharu Nakamura, Yukio Tokiwa, Tatsuhito Nakajima
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Patent number: 5335180Abstract: A control method for a moving body and facilities is comprised of steps of measuring and recognizing at least one of the states such as the number of a moving body, moving speed and moving direction, and changing the state of facilities which is a goal of the moving body based on the result of the measurement/recognition, or displaying the state of the facility. A control apparatus for a moving body and facilities is comprised of a measuring unit for measuring at least one of the states such as the number of a moving body, moving speed, and moving direction, a memory unit for storing information on the condition of a local area in which the moving body is moving or on the facilities said moving body is heading for; an arithmetic unit for processing information from the measurement unit and memory unit; and an input/output unit for accessing information processed by the arithmetic unit, and displaying the information.Type: GrantFiled: September 17, 1991Date of Patent: August 2, 1994Assignee: Hitachi, Ltd.Inventors: Kazunori Takahashi, Nobuhiro Hamada, Masao Takato, Kenji Baba, Yasuo Morooka, Junzo Kawakami, Takayoshi Yokota, Ryuji Kiyokawa
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Patent number: 5333240Abstract: A state diagnostic system for equipment is disclosed. The system is constructed of a neural network model for learning in advance one or more samples of information on vibrations, which are produced in a specific operation state of the equipment, in association with the corresponding operation state and obtaining an output signal corresponding to results of the learning when information on vibrations produced upon operation of the equipment is inputted; an input unit for inputting to the neural network model the information on the vibrations produced upon operation of the equipment; and an output unit for outputting the output signal from the neural network model as diagnostic results to a user. State diagnostic methods, learning system, preview/predict system, diagnosis training system, service life estimation assisting system, service life estimation assisting system, and maintenance assisting system are also disclosed.Type: GrantFiled: April 13, 1990Date of Patent: July 26, 1994Assignee: Hitachi, Ltd.Inventors: Hiroshi Matsumoto, Masahide Nomura, Makoto Shimoda, Tadayoshi Saito, Hiroshi Yokoyama, Kenji Baba, Junzo Kawakami, Yasunori Katayama, Akira Kaji, Seiitsu Nigawara
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Patent number: 5327355Abstract: In order to control a voltage using e.g. a tap transformer, the difference .DELTA.V between the actual voltage and a reference voltage is obtained and integrated over time. That integral is then modified by at least one parameter generated by fuzzy logic from control conditions of the voltage. In this way the fuzzy logic may find the optimum control strategy which keeps the actual voltage closest to the reference voltage without an excessive number of tap position changes. The reference voltage may vary with time, and therefore the control of the voltage with time may be evaluated, and the control conditions varied accordingly, e.g. by fuzzy logic, so that the control arrangement can exhibit learning. Normally, the integral is modified such that.intg..DELTA.Vdt.gtoreq.Bwhen B is the parameter determined by the fuzzy logic, but other control strategies may be used. The present invention is also applicable to control of reactive power.Type: GrantFiled: January 17, 1992Date of Patent: July 5, 1994Assignee: Hitachi, Ltd.Inventors: Tomio Chiba, Mitsuyasu Kido, Junzo Kawakami, Kunio Hirasawa, Yoshiaki Matsui
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Patent number: 5255202Abstract: Analog signals are sampled and converted into digital data which is then filtered by a digital filter. The filtered digital data is then subjected to an arithmetic operation. The blocking band of the digital filter is set to a frequency band which is above the pass band of the analog signal components. Frequency of sampling, as well as the frequency of noise caused by the sampling, is elevated, so that the noise frequency falls within the blocking band of the digital filter.Type: GrantFiled: January 11, 1991Date of Patent: October 19, 1993Assignee: Hitachi, Ltd.Inventors: Mitsuyasu Kido, Tomio Chiba, Hiroyuki Kudo, Junzo Kawakami, Tadao Kawai
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Patent number: 5153807Abstract: A self-tuning controller apparatus which comprises: a control response pattern recognition portion for receiving a set-point and a controlled variable of a process and for obtaining three performance indexes from a controlled variable response pattern generated in response to a change in the set-point or a disturbance; a control parameter correction portion for qualitatively evaluating the three performance indexes and for inferring a correction value of a PID control parameter on the basis of the result of evaluation; and a control performance dissatisfaction degree evaluation portion for evaluating the inferred correction value of the PID control parameter in accordance with the dissatisfaction degrees of the two performance indexes for the respective target specifications of the two of the three performance indexes. The control performance dissatisfaction degree evaluation portion acts to make the PID control parameter converge stably.Type: GrantFiled: June 12, 1991Date of Patent: October 6, 1992Assignee: Hitachi, Ltd.Inventors: Tadayoshi Saito, Susumu Takahashi, Kouji Tachibana, Junzo Kawakami, Nobuyuki Yokokawa
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Patent number: 5095365Abstract: An abnormality monitoring system comprises controller for changing monitoring frequency according to the operating state of devices to be monitored and the degree of monitoring importance and controller for correcting an inputted monitor picture by computing a positional shift of the monitor picture to a reference picture using a mark position of the monitor picture and a mark position of the reference picture, wherein, when abnormality is detected, the contents of the abnormality and the contents of processing against the abnormality are displayed as a guidance.Type: GrantFiled: October 17, 1990Date of Patent: March 10, 1992Assignee: Hitachi, Ltd.Inventors: Masao Takatoo, Chieko Onuma, Junzo Kawakami, Masayuki Fukai, Tadaaki Kitamura, Seiitsu Nigawara
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Patent number: 5087179Abstract: A filter for filtering working oil to be introduced into a gear pump is detachably mounted on the gear pump. The gear pump has a recess defined in an outer circumferential surface thereof. The filter is held in place by a filter holder. The filter holder has locking fingers engageable in the recess. The filter holder is detachably mounted on the gear pump with the locking fingers engaging in the recess.Type: GrantFiled: April 6, 1990Date of Patent: February 11, 1992Assignee: Kabushiki Kaisha Showa SeisakushoInventors: Sachio Nyui, Tamotu Nakamura, Junzo Kawakami
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Patent number: 4903192Abstract: A PID controller system comprises a PID controller for PID controlling a process standing for an object to be controlled, and an automatic adjuster being responsive to a variable relating to the manipulation of the PID controller and the response shape of the control variable from the process to obtain necessary performance indexes and preparing, on the basis of the performance indexes, optimum control parameters for tuning the actual control variable to the control command value, the optimum control parameters being fedback from the automatic adjuster to the PID controller.Type: GrantFiled: April 1, 1988Date of Patent: February 20, 1990Assignee: Hitachi, Ltd.Inventors: Tadayoshi Saito, Junzo Kawakami, Susumu Takahashi, Testuo Suehiro, Hiroshi Matsumoto, Kouji Tachibana