Patents by Inventor Masahiro Koyama

Masahiro Koyama 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).

  • Patent number: 7519968
    Abstract: In a decentralized control system, a program of the system is described in one form to flexibly cope with changes of the system, and the program developing efficiency, processing performance, and reliability of the system are increased. In configuration, a plurality of control processors and a plurality of devices are connected to a network, the control processors connected to the network are automatically detected and there is determined program execution assignment to possibly equalize the processing load imposed on the control processors. Each control processor executes the program in accordance with the program execution assignment.
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: April 14, 2009
    Assignee: Hitachi, Ltd.
    Inventors: Masahiro Koyama, Norihisa Miyake, Kenjiro Fujii
  • Patent number: 7470854
    Abstract: Electronic music apparatus includes: a tone generator section for generating a tone signal in response to operation of a performance operator unit; an external input section for receiving a tone signal from the outside; a mixer section for generating mixed tone signals by mixing the tone signal generated by the tone generator section and the tone signal received via the external input section; an external output section for outputting the tone signal, generated by the tone generator section, to the outside before that tone signal is mixed with the tone signal received via the external input section; and an audio output section for audibly outputting the mixed tone signals from the mixer section. Because the tone signal received via the external input section is not fed to the external output section, no unwanted howl is produced even where a plurality of the electronic music apparatus are connected together.
    Type: Grant
    Filed: August 25, 2004
    Date of Patent: December 30, 2008
    Assignee: Yamaha Corporation
    Inventor: Masahiro Koyama
  • Patent number: 7290979
    Abstract: In a circumferential flow pump, a first groove sectional area (S1) of a feed passage at a pump cover side is set to be smaller than a second groove sectional area (S2) of a feed passage at a pump base side, whereby the diameter of an eddy flow occurring in the first groove sectional area (S1) is smaller than the diameter of an eddy flow occurring in the second groove sectional area (S2). Therefore, the fuel pressure of the feed passage at the pump cover side is set to be higher than that of the feed passage at the pump base side, and thus a vane wheel is formed to be pressed against the pump base side.
    Type: Grant
    Filed: April 6, 2005
    Date of Patent: November 6, 2007
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Masahiro Koyama, Yuusaku Sakai
  • Publication number: 20070183886
    Abstract: A circumferential flow pump in which the quantity of swelling by alcohol or toluene contained in fuel, is curbed and an impeller thereof is prevented from locking is provided.
    Type: Application
    Filed: November 30, 2006
    Publication date: August 9, 2007
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masahiro Koyama, Seizou Inoue
  • Patent number: 7125218
    Abstract: Each of impeller grooves of an impeller has a first bow surface that extends from one end surface of the impeller so as to have a radius R1, a second bow surface that extends from the other end surface of the impeller so as to have a radius r1, and a projected partition wall having a connecting surface that connects the first and second bow surfaces. A pump cover and a pump base are provided adjacent to the respective end surfaces of the impeller, and are formed with respective annular feed passages that are defined by semicircular wall surfaces having radii R2 and r2, respectively. The radii R1 and r1 of the first and second bow surfaces are set longer than the radii R2 and r2 of the semicircular wall surfaces, respectively.
    Type: Grant
    Filed: July 20, 2004
    Date of Patent: October 24, 2006
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Masahiro Koyama, Seizo Inoue, Yusaku Sakai
  • Publication number: 20060214533
    Abstract: A permanent magnet rotary motor is provided in which cogging torque can be reduced and an increase in copper loss can also be prevented. A first divided core unit 13 is combined with a second divided core unit 15, thereby constituting a stator core 9. The first divided core unit 13 constitutes a yoke portion 17. The second divided core unit 15 includes pole pieces 25, magnetic pole surface constituent portions 27, and first and second type connecting portions 29A and 29B each mutually couple two adjacent magnetic pole surface constituent portions 27, all of which are formed integral with one another. The thickness of the first type connecting portions 29A in a radial direction of the stator core 9 is set to be smaller than the thickness of the second type connecting portions 29B in the radial direction of the stator core 9.
    Type: Application
    Filed: March 24, 2006
    Publication date: September 28, 2006
    Applicant: Sanyo Denki Co., Ltd.
    Inventors: Toshihito Miyashita, Satoru Onodera, Kazuyuki Kitazawa, Masahiro Koyama, Kazuhiko Takizawa
  • Patent number: 7099726
    Abstract: The production of semiconductor devices manufactured through a plurality of manufacturing sites is unitarily managed and an appropriate production plan is instructed. A computer projects a production plan of an entire company based on various information. The production plan is provided to each manufacturing site as a production instruction and provided to each business person or customer as a storing reply or an order accepting period reply. If the projected production plan (possible production volume) does not coincide with a production plan (necessary production volume), parameters obtained by correcting production allocation, production capability, lead time, yield and the like are re-input from a parameter input terminal. Based on the corrected parameters, the computer re-projects the production plan and projects an optimum production plan.
    Type: Grant
    Filed: February 6, 2003
    Date of Patent: August 29, 2006
    Assignee: Renesas Technology Corp.
    Inventors: Kiyohisa Kawase, Hajime Yuasa, Kazuhiko Maeda, Yoshio Kobayashi, Osamu Mishima, Takashi Honma, Jun Akashi, Hiroshi Yamada, Kenichiro Masunaga, Masahiro Koyama, Kenichi Funaki
  • Publication number: 20060120852
    Abstract: In a circumferential flow pump, a first groove sectional area (S1) of a feed passage at a pump cover side is set to be smaller than a second groove sectional area (S2) of a feed passage at a pump base side, whereby the diameter of an eddy flow occurring in the first groove sectional area (S1) is smaller than the diameter of an eddy flow occurring in the second groove sectional area (S2). Therefore, the fuel pressure of the feed passage at the pump cover side is set to be higher than that of the feed passage at the pump base side, and thus a vane wheel is formed to be pressed against the pump base side.
    Type: Application
    Filed: April 6, 2005
    Publication date: June 8, 2006
    Inventors: Masahiro Koyama, Yuusaku Sakai
  • Patent number: 7039481
    Abstract: The production of semiconductor devices manufactured through a plurality of manufacturing sites is unitarily managed and an appropriate production plan is instructed. A computer projects a production plan of an entire company based on various information. The production plan is provided to each manufacturing site as a production instruction and provided to each business person or customer as a storing reply or an order accepting period reply. If the projected production plan (possible production volume) does not coincide with a production plan (necessary production volume), parameters obtained by correcting production allocation, production capability, lead time, yield and the like are re-input from a parameter input terminal. Based on the corrected parameters, the computer re-projects the production plan and projects an optimum production plan.
    Type: Grant
    Filed: February 4, 2003
    Date of Patent: May 2, 2006
    Assignee: Renesas Technology Corp.
    Inventors: Kiyohisa Kawase, Hajime Yuasa, Kazuhiko Maeda, Yoshio Kobayashi, Osamu Mishima, Takashi Honma, Jun Akashi, Hiroshi Yamada, Kenichiro Masunaga, Masahiro Koyama, Kenichi Funaki
  • Publication number: 20050175443
    Abstract: Each of impeller grooves of an impeller has a first bow surface that extends from one end surface of the impeller so as to have a radius R1, a second bow surface that extends from the other end surface of the impeller so as to have a radius r1, and a projected partition wall having a connecting surface that connects the first and second bow surfaces. A pump cover and a pump base are provided adjacent to the respective end surfaces of the impeller, and are formed with respective annular feed passages that are defined by semicircular wall surfaces having radii R2 and r2, respectively. The radii R1 and r1 of the first and second bow surfaces are set longer than the radii R2 and r2 of the semicircular wall surfaces, respectively.
    Type: Application
    Filed: July 20, 2004
    Publication date: August 11, 2005
    Inventors: Masahiro Koyama, Seizo Inoue, Yusaku Sakai
  • Publication number: 20050045026
    Abstract: Electronic music apparatus includes: a tone generator section for generating a tone signal in response to operation of a performance operator unit; an external input section for receiving a tone signal from the outside; a mixer section for generating mixed tone signals by mixing the tone signal generated by the tone generator section and the tone signal received via the external input section; an external output section for outputting the tone signal, generated by the tone generator section, to the outside before that tone signal is mixed with the tone signal received via the external input section; and an audio output section for audibly outputting the mixed tone signals from the mixer section. Because the tone signal received via the external input section is not fed to the external output section, no unwanted howl is produced even where a plurality of the electronic music apparatus are connected together.
    Type: Application
    Filed: August 25, 2004
    Publication date: March 3, 2005
    Applicant: YAMAHA CORPORATION
    Inventor: Masahiro Koyama
  • Publication number: 20040230980
    Abstract: In a decentralized control system, a program of the system is described in one form to flexibly cope with changes of the system, and the program developing efficiency, processing performance, and reliability of the system are increased. In configuration, a plurality of control processors and a plurality of devices are connected to a network, the control processors connected to the network are automatically detected and there is determined program execution assignment to possibly equalize the processing load imposed on the control processors. Each control processor executes the program in accordance with the program execution assignment.
    Type: Application
    Filed: March 31, 2004
    Publication date: November 18, 2004
    Inventors: Masahiro Koyama, Norishisa Miyake, Kenjiro Fujii
  • Publication number: 20040158339
    Abstract: The production of semiconductor devices manufactured through a plurality of manufacturing sites is unitarily managed and an appropriate production plan is instructed. A computer projects a production plan of an entire company from necessary information such as a planning and finishing volume and a day's schedule of each of the manufacturing sites, each item and each process for satisfying a demand estimation of a product, order information on the product, and a product volume required to be manufactured which information are collected from a customer computer and a production management computer and the like. The production plan is provided to each manufacturing site as a production instruction and provided to each business person or customer as a storing reply or an order accepting period reply.
    Type: Application
    Filed: February 6, 2003
    Publication date: August 12, 2004
    Applicant: Hitachi, Ltd.
    Inventors: Kiyohisa Kawase, Hajime Yuasa, Kazuhiko Maeda, Yoshio Kobayashi, Osamu Mishima, Takashi Honma, Jun Akashi, Hiroshi Yamada, Kenichiro Masunaga, Masahiro Koyama, Kenichi Funaki
  • Publication number: 20030149503
    Abstract: The production of semiconductor devices manufactured through a plurality of manufacturing sites is unitarily managed and an appropriate production plan is instructed. A computer projects a production plan of an entire company from necessary information such as a planning and finishing volume and a day's schedule of each of the manufacturing sites, each item and each process for satisfying a demand estimation of a product, order information on the product, and a product volume required to be manufactured which information are collected from a customer computer and a production management computer and the like. The production plan is provided to each manufacturing site as a production instruction and provided to each business person or customer as a storing reply or an order accepting period reply.
    Type: Application
    Filed: February 4, 2003
    Publication date: August 7, 2003
    Applicant: Hitachi, Ltd.
    Inventors: Kiyohisa Kawase, Hajime Yuasa, Kazuhiko Maeda, Yoshio Kobayashi, Osamu Mishima, Takashi Honma, Jun Akashi, Hiroshi Yamada, Kenichiro Masunaga, Masahiro Koyama, Kenichi Funaki
  • Publication number: 20030145471
    Abstract: It is an object of the invention to prevent a rice grain from sticking to a scooping portion of a rice scoop. More specifically, in the invention, a large projection (13) and a small projection (14) are provided on a surface, a side surface and a rear surface of a scooping portion (12) of the rice scoop. Consequently, a contact area with a rice grain can be reduced, a separating property can be enhanced and rice can be prevented from sticking.
    Type: Application
    Filed: November 21, 2002
    Publication date: August 7, 2003
    Inventors: Masato Sano, Masahiro Koyama, Osamu Miyazaki
  • Patent number: 6518491
    Abstract: There is input type information defining a type of portable terminal as well as various music composing parameters. Automatic music composition process is carried out on the basis of the input type information and music composing parameters, so as to generate musical composition data suitable for reproduction on a portable terminal of the type indicated by the type information. Balance in predetermined musical characteristics of the generated musical composition data can also be achieved by adjusting the predetermined musical characteristics in accordance with the type of portable terminal. It is also possible to convert the generated musical composition data into a predetermined data format suiting the type of a portable terminal to be used. The generated musical composition data may be transmitted online to the portable terminal.
    Type: Grant
    Filed: August 9, 2001
    Date of Patent: February 11, 2003
    Assignee: Yamaha Corporation
    Inventors: Yasushi Kurakake, Toshiyuki Ito, Masahiro Koyama
  • Patent number: 6486472
    Abstract: The present invention aims to prevent degradation in performance due to a change in image quality and deflection distortions or the like in the vicinity of both ends of a scan area and detect a defect in a sample such as a semiconductor wafer or the like with high accuracy when the defect is inspected by use of an electron beam image, and allow a monitor to confirm an image area to be checked. The present invention is provided with means for comparing and checking defects in the sample, based on an image signal in which the neighborhoods of both ends of horizontal and vertical scan areas are respectively deleted under control of a blanking signal and a vertical synchronizing signal.
    Type: Grant
    Filed: August 30, 2001
    Date of Patent: November 26, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Yasuhiro Gunji, Taku Ninomiya, Masatsugu Kametani, Masahiro Koyama, Kenjiro Yamamoto
  • Publication number: 20020117619
    Abstract: The present invention aims to prevent degradation in performance due to a change in image quality and deflection distortions or the like in the vicinity of both ends of a scan area and detect a defect in a sample such as a semiconductor wafer or the like with high accuracy when the defect is inspected by use of an electron beam image, and allow a monitor to confirm an image area to be checked. The present invention is provided with means for comparing and checking defects in the sample, based on an image signal in which the neighborhoods of both ends of horizontal and vertical scan areas are respectively deleted under control of a blanking signal and a vertical synchronizing signal.
    Type: Application
    Filed: August 30, 2001
    Publication date: August 29, 2002
    Inventors: Yasuhiro Gunji, Taku Ninomiya, Masatsugu Kametani, Masahiro Koyama, Kenjiro Yamamoto
  • Publication number: 20020023529
    Abstract: There is input type information defining a type of portable terminal as well as various music composing parameters. Automatic music composition process is carried out on the basis of the input type information and music composing parameters, so as to generate musical composition data suitable for reproduction on a portable terminal of the type indicated by the type information. Balance in predetermined musical characteristics of the generated musical composition data can also be achieved by adjusting the predetermined musical characteristics in accordance with the type of portable terminal. It is also possible to convert the generated musical composition data into a predetermined data format suiting the type of a portable terminal to be used. The generated musical composition data may be transmitted online to the portable terminal.
    Type: Application
    Filed: August 9, 2001
    Publication date: February 28, 2002
    Applicant: Yamaha Corporation
    Inventors: Yasushi Kurakake, Toshiyuki Ito, Masahiro Koyama
  • Patent number: 6281483
    Abstract: A compact rice cooker with excellent rice cooking performance while preventing boiling-over is presented. This rice cooker includes a main body 31, a lid for covering the top of the main body, an inner pan detachably accommodated in the main body, a bottom heating coil for induction heating of the inner pan, a control unit for controlling high frequency power to be supplied to the bottom heating coil, and a rice gruel detecting unit disposed in a steam tube of the lid, and therefore electric power supply is controlled by the control unit depending on the detection state by the rice gruel detecting unit. The rice gruel detecting unit makes use of movement of the float due to the rise of rice gruel, and the lid is formed in a compact size, and boiling-over is prevented, so that tasty rice can be cooked.
    Type: Grant
    Filed: December 5, 2000
    Date of Patent: August 28, 2001
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masatoshi Yagi, Atsushi Korai, Masahiro Koyama, Hironori Hamada, Kazuhiro Ukida