Patents by Inventor Makoto Kakegawa
Makoto Kakegawa 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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Patent number: 8779371Abstract: A radiation detector is provided with a scintillator 2A containing a plurality of modified regions 21 and a plurality of photodetectors or a position-sensitive photodetector optically coupled to a surface of the scintillator 2A. The plurality of modified regions 21 are formed by irradiating an inside of a crystalline lump which will act as the scintillator 2A with a laser beam and three-dimensionally dotted and have a refractive index different from a refractive index of a surrounding region within the inside of the scintillator 2A.Type: GrantFiled: March 13, 2009Date of Patent: July 15, 2014Assignee: Hamamatsu Photonics K.K.Inventors: Takahiro Moriya, Takaji Yamashita, Makoto Kakegawa
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Publication number: 20110121192Abstract: A radiation detector is provided with a scintillator 2A containing a plurality of modified regions 21 and a plurality of photodetectors or a position-sensitive photodetector optically coupled to a surface of the scintillator 2A. The plurality of modified regions 21 are formed by irradiating an inside of a crystalline lump which will act as the scintillator 2A with a laser beam and three-dimensionally dotted and have a refractive index different from a refractive index of a surrounding region within the inside of the scintillator 2A.Type: ApplicationFiled: March 13, 2009Publication date: May 26, 2011Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Takahiro Moriya, Takaji Yamashita, Makoto Kakegawa
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Patent number: 6757880Abstract: By comprising a logical circuit storage unit for storing a logical circuit, a transmission line circuit generation unit for generating a transmission line circuit based on the logical circuit stored in the logical circuit storage unit, a transmission line circuit storage unit for storing the transmission line circuit generated by the transmission line circuit generation unit, a transmission line circuit editing unit for editing the transmission line circuit stored in the transmission line storage unit and a logical circuit modification unit for modifying the generated logical circuit based on the transmission line circuit edited by the transmission line circuit editing unit, work that has been manually done can be automated. Therefore, labor can be reduced and data reliability can be improved.Type: GrantFiled: September 24, 2001Date of Patent: June 29, 2004Assignee: Fujitsu LimitedInventor: Makoto Kakegawa
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Publication number: 20020199163Abstract: By comprising a logical circuit storage unit for storing a logical circuit, a transmission line circuit generation unit for generating a transmission line circuit based on the logical circuit stored in the logical circuit storage unit, a transmission line circuit storage unit for storing the transmission line circuit generated by the transmission line circuit generation unit, a transmission line circuit editing unit for editing the transmission line circuit stored in the transmission line storage unit and a logical circuit modification unit for modifying the generated logical circuit based on the transmission line circuit edited by the transmission line circuit editing unit, work that has been manually done can be automated. Therefore, labor can be reduced and data reliability can be improved.Type: ApplicationFiled: September 24, 2001Publication date: December 26, 2002Applicant: Fujitsu LimitedInventor: Makoto Kakegawa
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Patent number: 5768160Abstract: A logical simulator that creates a logical simulation model that can equally distribute the load to each processing element and certainly suppress a decrease in a parallel processing efficiency due to each processing element waiting for its synchronous operation, thus increasing the speed of the logical simulation. The logical simulator includes a load measuring unit for measuring the load of each of processing elements at a logical simulation execution time, and a load data file for holding as load data the result measured by the load measuring unit. The model creating unit creates a logical simulation model with a small load bias of each of the processing elements at the logical simulation execution time, based on the measured result from the load measuring unit. The logical simulator is applicable to check for the correctness in design before fabricating digital equipment such as a digital computer formed of logical circuits.Type: GrantFiled: July 15, 1996Date of Patent: June 16, 1998Assignee: Fujitsu LimitedInventor: Makoto Kakegawa
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Patent number: 4813061Abstract: X-ray pictures cooresponding to the same portion of a suject are stored in first and second imaging plates with the use of an x-ray of different energy. The stored X-ray pictures are converted to corresponding digital picture data and energy subtraction picture data is stored in memory with the use of a predetermined weight coefficient. A profile of a to-be-eliminated image of the picture stored es extracted and a remaining amount of the to-be-eliminated image is determined through comparison between the differentiated values of the profile and a threshold level.Type: GrantFiled: August 5, 1987Date of Patent: March 14, 1989Assignee: Kabushiki Kaisha ToshibaInventor: Makoto Kakegawa
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Patent number: 4468744Abstract: In a scintillation camera having apparatus for shortening waveforms, a regulating circuit for preventing display of signals representing unwanted .gamma. rays having excessive intensity including a device for comparing the peak of the shortened waveform representing the total light energy received by the camera from the .gamma. ray with a preset reference range between an upper limit and the saturation level of the pre-amplifiers of the camera and for generating a signal while the total light energy exceeds the reference range, a circuit for generating an output for a predetermined time after the signal ceases and an AND gate for blocking access to the display during the period of the output.Type: GrantFiled: May 18, 1981Date of Patent: August 28, 1984Assignee: Tokyo Shibaura Denki Kabushiki KaishaInventors: Makoto Kakegawa, Mineki Nishikawa, Tomohiko Kihara
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Patent number: 4432363Abstract: Apparatus for applying energy to the outside of the skin for penetrating the skin, a transducer for converting the energy penetrating the skin to a form of energy utilizable by a device implanted in the body, and a member for transmitting the skin penetrating energy to the transducer. Preferably the applied energy is infrared light or heat with the transmitting member being optical fibers or a heat pipe, respectively, and the implanted device is a pacemaker for the heart, the battery of the pacemaker being rechargeable by the converted energy and the pulse generator of the pacemaker being controllable by the converted energy.Type: GrantFiled: January 5, 1981Date of Patent: February 21, 1984Assignee: Tokyo Shibaura Denki Kabushiki KaishaInventor: Makoto Kakegawa
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Patent number: 4223388Abstract: A scintillation camera which detects the radiation position of radiation and visualizes the corresponding position by an oscilloscope, comprises: a reference radiation source including a radiation source and a radiation shielding member having a plurality of through-holes arranged in a matrix; a first memory for storing a picture of a reference radiation source during a calibrating mode in dependence on position signals of radiation radiated from the reference radiation source; an arithmetic unit for computing the correcting amount at each cross point in a given matrix in dependence on a departure of the position of each hole of the radiation shielding member in the picture stored in the first memory from the correct position of the corresponding hole of the actual radiation shielding member; a second memory for storing the correcting amounts at the respective cross points of the given matrix from the arithmetic unit; a correction amount calculation circuit which reads out the correcting amounts at cross poinType: GrantFiled: April 4, 1978Date of Patent: September 16, 1980Assignee: Tokyo Shibaura Electric Co., Ltd.Inventors: Mineki Nishikawa, Makoto Kakegawa, Masayuki Iwanaga, Koujirou Shouta
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Patent number: 4186307Abstract: A scintillation type radiation-measuring apparatus comprising a radiation-detecting scintillator, wherein a scintillation given off from the scintillator is converted into current by a photomultiplier tube; a current amplifier generates a plurality of pulses each proportional to the intensity of said converted current; the pulses have the width clipped by a clipped pulse generating circuit; the clipped form of the pulses is delayed by a delay circuit and integrated by an integrator; the wave height value of the outputs from the integrator is sampled by a sampling circuit to provide a sampled output; and means are provided to supply instructions to start and reset the operation of the integrator and to commence the operation of the sampling circuit in accordance with the interval between successively detected current pulses.Type: GrantFiled: August 29, 1977Date of Patent: January 29, 1980Assignee: Tokyo Shibaura Electric Co., Ltd.Inventors: Eiichi Tanaka, Norimasa Nohara, Takehiro Tomitani, Makoto Kakegawa, Nobuo Kumano
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Patent number: D366003Type: GrantFiled: November 1, 1994Date of Patent: January 9, 1996Assignee: Oppama Industry Co., Ltd.Inventors: Shigeo Take, Hiromi Watanabe, Atsuo Endo, Makoto Kakegawa