Patents by Inventor Masahiro Kuroda

Masahiro Kuroda 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: 20070280207
    Abstract: A layer 2 switch network system includes a terminal, an edge switch, and a Radius server that notifies the edge switch of a temporary MAC address allocated to the terminal. The edge switch stores therein swap data for associating the temporary MAC address with a real MAC address. When receiving a MAC frame from the terminal, the edge switch replaces the real MAC address of a source set in the MAC frame with the temporary MAC address of the source. When transmitting a MAC frame to the terminal, the edge switch replaces the temporary MAC address of a destination set in the MAC frame with the real MAC address of the destination.
    Type: Application
    Filed: March 3, 2004
    Publication date: December 6, 2007
    Applicants: Mitsubishi Electric Corporation, National Institute of Information and Communications Technology, Inc. Admin. Agency
    Inventors: Keiichi Shimizu, Masahiro Kuroda
  • Publication number: 20070161392
    Abstract: A group management assistance method includes a presence information receiving step (step S142) of receiving presence information of a client in which presence information changes, a change occurrence group detecting step (step S143) of determining whether a group to be generated by the presence information, a group in which constituent members are changed by the presence information, or a group in which constituent members are deleted by the presence information is present by comparing a policy of each group with the presence information, and a group information transmitting step (step S144) of transmitting group information related to the group to be generated, the group in which the constituent members are changed, or the group in which the constituent members are deleted.
    Type: Application
    Filed: January 5, 2007
    Publication date: July 12, 2007
    Applicant: NEC CORPORATION
    Inventors: Yoshihiro ONO, Masahiro KURODA
  • Publication number: 20070153977
    Abstract: A permanent magnet type motor comprising a rotor main body rotatably supported with respect to a stationary member, a rotor which is provided on an outer periphery face of the rotor main body and which is arranged such that S poles and N poles of a plurality of permanent magnets are provided alternately, a stator composed of a stator core arranged at the outer periphery side or inner periphery side of the rotor, the stator core having winding storage sections, and stator windings stored in the winding storage sections, a sensor fixed to the stationary member so as to be proximal to the permanent magnets, the sensor detecting a position of the permanent magnets, a detection target member having a detector for detecting a magnetic resistance change portion formed on the rotor main body, and a rotational position detecting magnetic sensor arranged at the stationary member.
    Type: Application
    Filed: March 13, 2007
    Publication date: July 5, 2007
    Inventors: Akiyuki Yokoyama, Masahiro Kuroda, Tadahiro Nakayama, Shinichi Kominato, Tomokazu Harada, Yoshinori Saito
  • Publication number: 20070153976
    Abstract: A permanent magnet type motor comprising a rotor main body rotatably supported with respect to a stationary member, a rotor which is provided on an outer periphery face of the rotor main body and which is arranged such that S poles and N poles of a plurality of permanent magnets are provided alternately, a stator composed of a stator core arranged at the outer periphery side or inner periphery side of the rotor, the stator core having winding storage sections, and stator windings stored in the winding storage sections, a sensor fixed to the stationary member so as to be proximal to the permanent magnets, the sensor detecting a position of the permanent magnets, a detection target member having a detector for detecting a magnetic resistance change portion formed on the rotor main body, and a rotational position detecting magnetic sensor arranged at the stationary member.
    Type: Application
    Filed: March 13, 2007
    Publication date: July 5, 2007
    Inventors: Akiyuki Yokoyama, Masahiro Kuroda, Tadahiro Nakayama, Shinichi Kominato, Tomokazu Harada, Yoshinori Saito
  • Patent number: 7202580
    Abstract: A permanent magnet type motor comprising a rotor main body rotatably supported with respect to a stationary member, a rotor which is provided on an outer periphery face of the rotor main body and which is arranged such that S poles and N poles of a plurality of permanent magnets are provided alternately, a stator composed of a stator core arranged at the outer periphery side or inner periphery side of the rotor, the stator core having winding storage sections, and stator windings stored in the winding storage sections, a sensor fixed to the stationary member so as to be proximal to the permanent magnets, the sensor detecting a position of the permanent magnets, a detection target member having a detector for detecting a magnetic resistance change portion formed on the rotor main body, and a rotational position detecting magnetic sensor arranged at the stationary member.
    Type: Grant
    Filed: May 14, 2004
    Date of Patent: April 10, 2007
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Akiyuki Yokoyama, Masahiro Kuroda, Tadahiro Nakayama, Shinichi Kominato, Tomokazu Harada, Yoshinori Saito
  • Publication number: 20070024149
    Abstract: An electric motor includes a stator including a stator core made of a plurality of split cores joined to each other and a stator winding wound on the stator core, and an admixture interposed in a joint between the split cores and comprising a binder mixed with a granular magnetic substance.
    Type: Application
    Filed: May 26, 2006
    Publication date: February 1, 2007
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Masato Nagata, Masahiro Kuroda, Akiyuki Yokoyama, Takanobu Kushihira, Tadahiro Nakayama, Tsuyoshi Shinohara
  • Publication number: 20060152900
    Abstract: According to some embodiments, systems for improved blower fans are provided. In some embodiments, systems may include a casing comprising an inlet to accept a fluid and an outlet to evacuate the fluid. The systems may further comprise an impeller disposed within the casing, comprising a hub and one or more impeller blades coupled to the hub. In some embodiments, the inlet of the casing may be shaped to reduce the amount of fluid that evacuates the casing via the inlet due to pressure within the casing.
    Type: Application
    Filed: January 7, 2005
    Publication date: July 13, 2006
    Inventors: Yoshifumi Nishi, Masahiro Kuroda, Sridhar Machiroutu, Himanshu Pokharna, Karen Stafford
  • Publication number: 20060066270
    Abstract: A controller for a motor to be mounted on a vehicle includes a boosting circuit 2 for raising the voltage of a battery that is disposed near the battery 1, a motor driving circuit 4 disposed near the motor 3 to be mounted on the vehicle for controlling the motor 3 to be mounted on the vehicle to be driven in accordance with boosted voltage outputted from the boosting circuit and a communication unit 5 disposed between the boosting circuit 2 and the motor driving circuit 4.
    Type: Application
    Filed: September 22, 2005
    Publication date: March 30, 2006
    Inventors: Shin Kumagai, Shigeru Endo, Atsushi Horikoshi, Kazunobu Nagai, Masahiro Kuroda
  • Patent number: 6934342
    Abstract: A analog/digital modulation type discrimination circuit 1 discriminates whether a reception signal is an analog modulation type, a linear modulation type or a non-linear modulation type by digital modulation type. In case where the reception signal is discriminated to be the analog modulation type, an analog modulation type discrimination circuit 2 discriminates whether it is an AM signal or an FM signal among the analog modulation type. In case where the reception signal is discriminated to be the linear modulation type by digital modulation type, a linear modulation type discrimination circuit 3 discriminates whether it is a BPSK signal, a QPSK signal, a ?/4-shift QPSK signal, an 8-PSK signal, an M-ary PSK signal of multi-level exceeding 8-levels, a 16 QAM signal or a n M-ary QAM signal of multi-level exceeding 16-levels among the linear modulation type by digital modulation type.
    Type: Grant
    Filed: September 11, 2000
    Date of Patent: August 23, 2005
    Assignee: NEC Corporation
    Inventors: Hiroyuki Ishii, Masahiro Kuroda, Yoshimitsu Iki
  • Publication number: 20050116558
    Abstract: A permanent magnet type motor comprising a rotor main body rotatably supported with respect to a stationary member, a rotor which is provided on an outer periphery face of the rotor main body and which is arranged such that S poles and N poles of a plurality of permanent magnets are provided alternately, a stator composed of a stator core arranged at the outer periphery side or inner periphery side of the rotor, the stator core having winding storage sections, and stator windings stored in the winding storage sections, a sensor fixed to the stationary member so as to be proximal to the permanent magnets, the sensor detecting a position of the permanent magnets, a detection target member having a detector for detecting a magnetic resistance change portion formed on the rotor main body, and a rotational position detecting magnetic sensor arranged at the stationary member.
    Type: Application
    Filed: May 14, 2004
    Publication date: June 2, 2005
    Inventors: Akiyuki Yokoyama, Masahiro Kuroda, Tadahiro Nakayama, Shinichi Kominato, Tomokazu Harada, Yoshinori Saito
  • Patent number: 6553091
    Abstract: An X-ray CT apparatus includes a pair of an involute gear and a magnetic sensor as a structure for detecting the rotation of the gantry rotary section in a non-contact fashion. The involute gear imparts a periodic change in the magnetic flux in the circumferential direction of a circle coaxial with the gantry rotary section. The magnetic sensor including the magnet and the magnetic reluctance (MR) elements detects the change in the magnetic flux caused by the rotation of the involute gear together with the gantry rotary section to generate a pulse signal conforming with the change in the magnetic flux. The pulse signal obtained from the magnetic sensor is supplied to the servo amplifier, the CT main control section, etc. via the signal processing unit.
    Type: Grant
    Filed: June 21, 2001
    Date of Patent: April 22, 2003
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tetsuyuki Takanashi, Tomiya Sasaki, Yuichi Kasuya, Masahiro Kuroda
  • Publication number: 20010055362
    Abstract: An X-ray CT apparatus includes a pair of an involute gear and a magnetic sensor as a structure for detecting the rotation of the gantry rotary section in a non-contact fashion. The involute gear imparts a periodic change in the magnetic flux in the circumferential direction of a circle coaxial with the gantry rotary section. The magnetic sensor including the magnet and the magnetic reluctance (MR) elements detects the change in the magnetic flux caused by the rotation of the involute gear together with the gantry rotary section to generate a pulse signal conforming with the change in the-magnetic flux. The pulse signal obtained from the magnetic sensor is supplied to the servo amplifier, the CT main control section, etc. via the signal processing unit.
    Type: Application
    Filed: June 21, 2001
    Publication date: December 27, 2001
    Inventors: Tetsuyuki Takanashi, Tomiya Sasaki, Yuichi Kasuya, Masahiro Kuroda
  • Patent number: 6311011
    Abstract: A video recorder for recording signal including audio and video signals, comprises a module for receiving program information signal designating a program identifier, starting and ending time of a program, a first storage device, a first recording module for continuously recording the content signal at least one channel in the first storage device, and a module for deleting the content signals of the oldest program recorded in the first storage device in reference with the program information signals.
    Type: Grant
    Filed: December 13, 1999
    Date of Patent: October 30, 2001
    Assignee: NEC Corporation
    Inventor: Masahiro Kuroda
  • Patent number: 5603366
    Abstract: A precure tread for a tire has surface grooves facing a tread face, rear grooves facing a crown portion of a base tire, and a passage for communication between the rear grooves to atmosphere. The groove bottom of the rear grooves is located at a higher level than a groove bottom of the surface groove in the radial direction. The tire durability can be considerably improved when this precure tread is applied to a new tire or a retreaded tire.
    Type: Grant
    Filed: March 21, 1995
    Date of Patent: February 18, 1997
    Assignee: Bridgestone Corporation
    Inventors: Shohachiro Nakayama, Toyomi Iwata, Masahiro Kuroda, Naoyuki Goto, Hiroshi Ueda, Michio Ishii
  • Patent number: 5531992
    Abstract: A low molecular weight vegetable composition comprising a seed of Milk Thistle which are heated with far infrared rays, for example, using a vessel comprising ceramics and then brewed with brewing bacteria such as "Koji" fungus, digestive enzyme, protein hydrolase or a precursor giving said enzyme or said protein hydrolase.
    Type: Grant
    Filed: June 2, 1994
    Date of Patent: July 2, 1996
    Assignee: Kozo Niwa
    Inventors: Hiroko Yamazaki, Masahiro Kuroda, Kozo Niwa
  • Patent number: 5445691
    Abstract: A precure tread for a tire has surface grooves facing a tread face, rear grooves facing a crown portion of a base tire, and a passage for communication between the grooves to atmosphere. The groove bottom of the rear grooves is located at a high level than a groove bottom of the surface groove in the radial direction. The tire durability can be considerably improved when this precure tread is applied to a new tire or a retreated tire.
    Type: Grant
    Filed: September 14, 1993
    Date of Patent: August 29, 1995
    Assignee: Bridgestone Corporation
    Inventors: Shohachiro Nakayama, Toyomi Iwata, Masahiro Kuroda, Naoyuki Goto, Hiroshi Ueda, Michio Ishii
  • Patent number: 5275218
    Abstract: A precure tread for a tire has surface grooves facing a tread face, rear grooves facing a crown portion of a base tire, and a passage for communication between the rear grooves to atmosphere. The groove bottom of the rear grooves is located at a higher level than a groove bottom of the surface groove in the radial direction. The tire durability can be considerably improved when this precure tread is applied to a new tire or a retread tire.
    Type: Grant
    Filed: March 28, 1989
    Date of Patent: January 4, 1994
    Assignee: Bridgestone Corporation
    Inventors: Shohachiro Nakayama, Toyomi Iwata, Masahiro Kuroda, Naoyuki Goto, Hiroshi Ueda, Michio Ishii
  • Patent number: 5174214
    Abstract: In a tire for a levitation-type vehicle for supporting a load which varies depending upon a change in speed of the levitation-type vehicle at landing and during subsequent traveling thereof, a configuration of a crown and rigidity of the crown are set so as to have a ground-contact configuration in which, when a load of the levitation-type vehicle is equal to or less than 45% at its full load, a ratio of a ground-contact length of a pair of shoulders in a circumferential direction of the tire with respect to a ground-contact length, in the circumferential direction of the tire, of a central portion of the crown in the widthwise direction is 0.6.about.1.5. Accordingly, the tire for the levitation-type vehicle has a wide ground-contact area at an initial stage of landing and traveling.
    Type: Grant
    Filed: February 16, 1990
    Date of Patent: December 29, 1992
    Assignees: Bridgestone Corporation, Railway Technical Research Institute
    Inventors: Kazuhiro Oda, Hideyuki Takizawa, Masayoshi Azakami, Yukimasa Yamada, Masahiro Kuroda
  • Patent number: 5105865
    Abstract: A bias tire for an aircraft includes a laminate formed by laminating a plurality of plies intersecting with each other and reinforced by organic fiber cords having a large thermal contraction coefficient. Both ends of the plies are turned up around bead cores. A profile curve I of a representative ply corresponding to that number counted from an innermost ply of the laminate plus one, which is one half of a total number of the plies when the tire mounted on a normal rim is filled with 1% of a normal inner pressure is constructed by a smoothly changing crown profile curve J and a smoothly changing side profile curves K. The crown profile curve J intersects a natural equilibrium profile curve H and is positioned between natural equilibrium profile curves E and H between both shoulder ends.
    Type: Grant
    Filed: December 19, 1989
    Date of Patent: April 21, 1992
    Assignee: Bridgestone Corporation
    Inventors: Minoru Togashi, Takeshi Takanami, Masahiro Kuroda
  • Patent number: 4939751
    Abstract: A phase signal estimator receives a first phase signal having a first frequency and generates a first filtered signal phase-locked with the first phase signal as an estimated phase signal. A phase locked loop section receives a second phase signal having a second frequency which corresponds to a predetermined multiple of the first frequency of the first phase signal, and outputs a second filtered signal phase-locked with the second phase signal as a desired phase signal. In the phase locked loop section, a phase comparator receives the second phase signal and the desired phase signal and generates a phase difference signal. A filter low-pass filters the phase difference signal from the phase comparator. A signal generator generates a signal having a predetermined frequency in accordance with the output from the filter. A phase adder adds the signal having the predetermined frequency from the signal generator and the estimated phase signal from the phase signal estimator and outputs the desired phase signal.
    Type: Grant
    Filed: October 13, 1988
    Date of Patent: July 3, 1990
    Assignee: Anritsu Corporation
    Inventor: Masahiro Kuroda