Patents by Inventor Yoshiyuki Maeda

Yoshiyuki Maeda 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).

  • Publication number: 20100205398
    Abstract: In an optical transmission device, firmware that operates within a CPU of a first LIU and firmware that operates within a CPU of a second LIU periodically measure a load status of a CPU via an OS, respectively. Switchover control of a master CPU is performed according to a load status of a CPU measured by the firmware of each LIU. For example, when a load status of the CPU of the second LIU is lower than that of the CPU of the first LIU, a master CPU that performs switchover control of a predetermined port is switched to a slave CPU in the first LIU, and a slave CPU related to the predetermined port is switched to a master CPU in the second LIU, thereby dynamically changing the setting.
    Type: Application
    Filed: April 13, 2010
    Publication date: August 12, 2010
    Applicant: FUJITSU LIMITED
    Inventors: Yoshiyuki Maeda, Yumiko Ogata, Taku Yoshida, Seiji Miyata
  • Patent number: 7724736
    Abstract: A frame forwarding apparatus comprises a receiving unit receiving a frame including a source address, a destination address and a VWAN identifier; a converting unit converting a VWAN identifier in the frame into one of degenerate VWAN identifiers that the number of adoptable values thereof is smaller than the number of VWAN identifiers; a storage unit containing at least one entry containing the source address in the frame, a degenerate VWAN identifier that a VWAN identifier in the frame is converted, and path information representing a path via which the frame is received; a retrieving unit retrieving, from said storage unit, an entry corresponding to the destination address in the frame and the degenerate VWAN identifier in the frame; a restoring unit restoring the degenerate VWAN identifier in the frame into the original VWAN identifier; and a transmitting unit transmitting the frame based on the path information in the entry retrieved.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: May 25, 2010
    Assignee: Fujitsu Limited
    Inventors: Yoshiyuki Maeda, Hironori Kadota, Yoko Toyozumi, Yumiko Ogata, Yoshiko Sakamoto, Seiji Miyata, Hiromu Yoshi
  • Publication number: 20100074629
    Abstract: An optical communication apparatus includes an optical signal transmitter for outputting an optical signal, an optical switch device for switching a route of the optical signal, a drive controller for supplying a drive current for controlling a route switching to the optical switch device, a cooling device for cooling the optical switch device on the basis of a control signal, a temperature controller for transmitting the control signal to the cooling device in order to keep a measured temperature at a specific temperature, where the measured temperature is related to a temperature of the optical switch device.
    Type: Application
    Filed: September 14, 2009
    Publication date: March 25, 2010
    Applicant: Fujitsu Limited
    Inventors: Keisuke HARADA, Taku YOSHIDA, Yoshiyuki MAEDA
  • Publication number: 20080226299
    Abstract: An optical transmission apparatus includes redundant line cards each having a plurality of ports, a hardware unit and a CPU. The hardware unit obtains failure information on redundant lines for each port. The CPU determines switching control of the redundant lines based on the failure information. Then, the hardware unit switches the redundant lines based on the switching control determined by the CPU, so as to transmit an SDH/SONET optical signal in a ring network. The CPU of one of the line cards is set as a master CPU on the corresponding line card to control switching of the redundant lines. Further, the CPU of the other line card is set as a slave CPU.
    Type: Application
    Filed: February 21, 2008
    Publication date: September 18, 2008
    Applicant: FUJITSU LIMITED
    Inventors: Yoshiyuki Maeda, Hironori Kadota, Taku Yoshida, Yoshinobu Matsukawa
  • Publication number: 20080226304
    Abstract: An optical transmission apparatus includes redundant line cards each installed with hardware and a CPU. The hardware obtains failure information on redundant lines including a working line and a protection line, and the CPU determines switching control of the redundant lines based on the obtained failure information. Further, the hardware switches the redundant lines based on switching control determined by the CPU, so as to transmit an SDH/SONET optical signal. In the apparatus, from or to hardware installed in each of the redundant line cards, the failure information obtained by the hardware is communicated to hardware installed in a neighboring line card.
    Type: Application
    Filed: February 27, 2008
    Publication date: September 18, 2008
    Applicant: FUJITSU LIMITED
    Inventors: Yoshiyuki Maeda, Hironori Kadota, Taku Yoshida, Yoshinobu Matsukawa
  • Patent number: 7353816
    Abstract: The object of the present invention is to improve shooting precision by causing a bullet to be fired before retreating of the slide commences, which is a problem in related art 3.
    Type: Grant
    Filed: August 2, 2007
    Date of Patent: April 8, 2008
    Assignee: Maruzen Company Limited
    Inventors: Tetsuo Maeda, Yoshiyuki Maeda
  • Publication number: 20080031271
    Abstract: A frame forwarding apparatus comprises a receiving unit receiving a frame including a source address, a destination address and a VWAN identifier; a converting unit converting a VWAN identifier in the frame into one of degenerate VWAN identifiers that the number of adoptable values thereof is smaller than the number of VWAN identifiers; a storage unit containing at least one entry containing the source address in the frame, a degenerate VWAN identifier that a VWAN identifier in the frame is converted, and path information representing a path via which the frame is received; a retrieving unit retrieving, from said storage unit, an entry corresponding to the destination address in the frame and the degenerate VWAN identifier in the frame; a restoring unit restoring the degenerate VWAN identifier in the frame into the original VWAN identifier; and a transmitting unit transmitting the frame based on the path information in the entry retrieved.
    Type: Application
    Filed: September 28, 2007
    Publication date: February 7, 2008
    Inventors: Yoshiyuki Maeda, Hironori Kadota, Yoko Toyozumi, Yumiko Ogata, Yoshiko Sakamoto, Seiji Miyata, Hiromu Yoshii
  • Publication number: 20080017180
    Abstract: The object of the present invention is to improve shooting precision by causing a bullet to be fired before retreating of the slide commences, which is a problem in related art 3.
    Type: Application
    Filed: August 2, 2007
    Publication date: January 24, 2008
    Applicant: Maruzen Company Limited
    Inventors: Tetsuo Maeda, Yoshiyuki Maeda
  • Publication number: 20080002589
    Abstract: A communication processing apparatus appends group information representing a group to received communication frames. Group information to be appended to the communication frames is changed on a predetermined cycle. The communication frames processed in each processing unit are counted separately for each of the group information appended, and the count value is collected in each processing unit. With a communication processing apparatus, such as a switch and a router, which has a plurality of processing units (device), performs processing by each of the processing units on the communication frames received from a receiving unit, and transmits the processed communication frames from a transmitting unit, it is possible to realize a communication processing apparatus and a totalizing system capable of accurately counting and collecting the communication frames while performing an operation when totalizing the number of communication frames processed in each of the processing units.
    Type: Application
    Filed: September 14, 2007
    Publication date: January 3, 2008
    Inventors: Hiromu YOSHII, Hironori KADOTA, Yoko TOYOZUMI, Yumiko OGATA, Taku YOSHIDA, Yoshiyuki MAEDA, Yoshiko SAKAMOTO, Seiji MIYATA, Kazuyuki INOMOTO
  • Patent number: 7290539
    Abstract: An apparatus for installing a high-pressure gas cartridge of this invention comprises: a high-pressure gas cartridge attachment and detachment apparatus for an air gun comprising: a high-pressure gas cartridge housing provided in a clip of an air gun; a back grip panel for a grip formed as a clamp lever; a lever rotation axis constituting a rotation fulcrum for a back grip panel; and a pressing curved surface capable of pressing a bottom part of the high-pressure gas cartridge, wherein a side grip panel of the grip is provided in an attachable and detachable manner so as to open and close the high-pressure gas cartridge housing, the high-pressure gas cartridge may be attached and detached with the back grip panel of the grip rotated about the lever rotation fulcrum so as to be in an open state, and the back grip panel presses against the bottom of the high-pressure gas cartridge due to rotation centered about the lever rotation axis so as to be closed and so as to push up and install the high-pressure gas car
    Type: Grant
    Filed: May 23, 2005
    Date of Patent: November 6, 2007
    Assignee: Maruzen Company Limited
    Inventors: Tetsuo Maeda, Yoshiyuki Maeda
  • Publication number: 20070223479
    Abstract: A communication processing apparatus appends group information representing a group to received communication frames. Group information to be appended to the communication frames is changed on a predetermined cycle. The communication frames processed in each processing unit are counted separately for each of the group information appended, and the count value is collected in each processing unit. With a communication processing apparatus, such as a switch and a router, which has a plurality of processing units (device), performs processing by each of the processing units on the communication frames received from a receiving unit, and transmits the processed communication frames from a transmitting unit, it is possible to realize a communication processing apparatus and a totalizing system capable of accurately counting and collecting the communication frames while performing an operation when totalizing the number of communication frames processed in each of the processing units.
    Type: Application
    Filed: July 20, 2006
    Publication date: September 27, 2007
    Inventors: Hiromu Yoshii, Hironori Kadota, Yoko Toyozumi, Yumiko Ogata, Taku Yoshida, Yoshiyuki Maeda, Yoshiko Kojima, Seiji Miyata
  • Patent number: 7267119
    Abstract: An air gun including a slide, a barrel, a cylinder portion, a hit pin, a hollow valve pin chamber, a valve body, a gas supply port, a valve pin, a pressing section, a bullet feed nozzle link connected to a trigger; and a bullet feed nozzle.
    Type: Grant
    Filed: December 30, 2004
    Date of Patent: September 11, 2007
    Assignee: Maruzen Company Limited
    Inventors: Tetsuo Maeda, Yoshiyuki Maeda
  • Publication number: 20070147231
    Abstract: A path protection method is disclosed that is capable of path protection without extra cost and able to improve path switching efficiency. The method includes the steps of associating a virtual network identifier assigned to one or more users with a virtual network identifier for management, the virtual network identifier assigned to one or more users being regarded as one path to set a path for current use and a spare path; and when switching the currently-used path and the spare path, according to service class information included in the virtual network identifier for management, a path corresponding to a virtual network identifier for management having a higher service class than other paths is preferentially switched to.
    Type: Application
    Filed: March 24, 2006
    Publication date: June 28, 2007
    Inventors: Taku Yoshida, Hironori Kadota, Yoko Toyozumi, Yumiko Ogata, Yoshiyuki Maeda, Hiromu Yoshii, Yoshiko Sakamoto, Seiji Miyata
  • Patent number: 7159584
    Abstract: The airgun firing mechanism of the present invention has a rotary magazine 1 with a plurality of bores 11 made from a material through which magnetic force can pass, and a magnet 10 is provided in the center of the magazine 1. Also, the airgun firing mechanism of the present invention has inner diameters of respective bores 11 of the rotary magazine 1 having a plurality of bores 11 formed to inner diameters capable of having pellets 91 inserted into them, with the magazine 1 being formed from a material that can pass magnetic force, and with a magnet 10 being provided in the center of the magazine 1. In this way, it is possible to repeatedly fire two different types of bullets, namely BB bullets 90 and pellets 91, using one magazine 1 of one airgun G.
    Type: Grant
    Filed: May 28, 2003
    Date of Patent: January 9, 2007
    Assignee: Maruzen Company Limited
    Inventors: Tetsuo Maeda, Yoshiyuki Maeda
  • Publication number: 20060260596
    Abstract: An apparatus for installing a high-pressure gas cartridge of this invention comprises: a high-pressure gas cartridge attachment and detachment apparatus for an air gun comprising: a high-pressure gas cartridge housing provided in a clip of an air gun; a back grip panel for a grip formed as a clamp lever; a lever rotation axis constituting a rotation fulcrum for a back grip panel; and a pressing curved surface capable of pressing a bottom part of the high-pressure gas cartridge, wherein a side grip panel of the grip is provided in an attachable and detachable manner so as to open and close the high-pressure gas cartridge housing, the high-pressure gas cartridge may be attached and detached with the back grip panel of the grip rotated about the lever rotation fulcrum so as to be in an open state, and the back grip panel presses against the bottom of the high-pressure gas cartridge due to rotation centered about the lever rotation axis so as to be closed and so as to push up and install the high-pressure gas car
    Type: Application
    Filed: May 23, 2005
    Publication date: November 23, 2006
    Inventors: Tetsuo Maeda, Yoshiyuki Maeda
  • Patent number: 7100922
    Abstract: A bull's eye target device with a target surface section provided with a central section and a plurality of ring sections, and a circuit substrate provided so as to be spaced from the rear surface of the target surface section. The front surface side of the target surface section is formed in such a manner that the central section is raised to the greatest extent, with the plurality of ring sections becoming relatively lower as the periphery is approached, and a central pressing part and plurality of ring-shaped pressing parts are formed so as to project at the rear surface side at positions corresponding to the central section and the plurality of ring sections. The circuit substrate is provided with circular independent terminals at positions corresponding to the central pressing part and plurality of ring-shaped pressing parts of the target surface section.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: September 5, 2006
    Assignee: MARUZEN Company Limited
    Inventors: Tetsuo Maeda, Yoshiyuki Maeda
  • Publication number: 20060162711
    Abstract: An air gun including a slide, a barrel, a cylinder portion, a hit pin, a hollow valve pin chamber, a valve body, a gas supply port, a valve pin, a pressing section, a bullet feed nozzle link connected to a trigger; and a bullet feed nozzle.
    Type: Application
    Filed: December 30, 2004
    Publication date: July 27, 2006
    Inventors: Tetsuo Maeda, Yoshiyuki Maeda
  • Publication number: 20060006597
    Abstract: An advantage of the invention is in providing a device a device capable of accurately determining a position to which a pellet has been fired and instantaneously sending points to a display unit. Namely, because the target surface is such that inside and outside of boundary lines are at different heights, in the event of an impact making contact with a boundary line, a pellet will always impact with and apply pressure to the inside part of the target for which the points are higher. A terminal of a circuit substrate corresponding to this higher points side then makes contact so as to provide excitation, and the points can be accurately displayed. The bull's eye target device of this invention is such that a target section is provided with a target surface section provided with a central section and a plurality of ring sections, and a circuit substrate provided so as to be spaced from the rear surface of the target surface section.
    Type: Application
    Filed: December 3, 2004
    Publication date: January 12, 2006
    Inventors: Tetsuo Maeda, Yoshiyuki Maeda
  • Publication number: 20040237952
    Abstract: The airgun firing mechanism of the present invention has a rotary magazine 1 with a plurality of bores 11 made from a material through which magnetic force can pass, and a magnet 10 is provided in the center of the magazine 1. Also, the airgun firing mechanism of the present invention has inner diameters of respective bores 11 of the rotary magazine 1 having a plurality of bores 11 formed to inner diameters capable of having pellets 91 inserted into them, with the magazine 1 being formed from a material that can pass magnetic force, and with a magnet 10 being provided in the center of the magazine 1. In this way, it is possible to repeatedly fire two different types of bullets, namely BB bullets 90 and pellets 91, using one magazine 1 of one airgun G.
    Type: Application
    Filed: May 28, 2003
    Publication date: December 2, 2004
    Applicant: Maruzen Company Limited
    Inventors: Tetsuo Maeda, Yoshiyuki Maeda
  • Patent number: RE39805
    Abstract: This invention can make a valve compact in function and improve using efficiency of a compressed gas and make an air gun compact. To achieve this object, an air gun is constructed by a hit pin arranged in a cylinder portion, a valve body arranged within a hollow portion of the cylinder portion and having a bullet supplying nozzle chamber and a valve pin chamber, a gas inlet port opened to a sleeve-shaped circumferential face of the valve pin chamber, a bullet supplying nozzle arranged within the bullet supplying nozzle chamber, and a valve pin arranged within the valve pin chamber. The hit pin is pressed on a muzzle side and the valve pin is slid to the muzzle side so that an airtight state between a valve pin flange portion and a side face of the valve pin chamber on its gun rear end side is released. A compressed gas is supplied to a nozzle chamber side opening and a valve pin chamber side opening from a clearance between the valve pin flange portion and the gun rear end side face of the valve pin chamber.
    Type: Grant
    Filed: February 16, 2006
    Date of Patent: September 4, 2007
    Assignee: Maruzen Company Limited
    Inventors: Tetsuo Maeda, Yoshiyuki Maeda, Yuichi Toyoda