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).
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Publication number: 20070280207Abstract: 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: ApplicationFiled: March 3, 2004Publication date: December 6, 2007Applicants: Mitsubishi Electric Corporation, National Institute of Information and Communications Technology, Inc. Admin. AgencyInventors: Keiichi Shimizu, Masahiro Kuroda
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Publication number: 20070161392Abstract: 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: ApplicationFiled: January 5, 2007Publication date: July 12, 2007Applicant: NEC CORPORATIONInventors: Yoshihiro ONO, Masahiro KURODA
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Publication number: 20070153977Abstract: 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: ApplicationFiled: March 13, 2007Publication date: July 5, 2007Inventors: Akiyuki Yokoyama, Masahiro Kuroda, Tadahiro Nakayama, Shinichi Kominato, Tomokazu Harada, Yoshinori Saito
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Publication number: 20070153976Abstract: 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: ApplicationFiled: March 13, 2007Publication date: July 5, 2007Inventors: Akiyuki Yokoyama, Masahiro Kuroda, Tadahiro Nakayama, Shinichi Kominato, Tomokazu Harada, Yoshinori Saito
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Patent number: 7202580Abstract: 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: GrantFiled: May 14, 2004Date of Patent: April 10, 2007Assignee: Kabushiki Kaisha ToshibaInventors: Akiyuki Yokoyama, Masahiro Kuroda, Tadahiro Nakayama, Shinichi Kominato, Tomokazu Harada, Yoshinori Saito
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Publication number: 20070024149Abstract: 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: ApplicationFiled: May 26, 2006Publication date: February 1, 2007Applicant: Kabushiki Kaisha ToshibaInventors: Masato Nagata, Masahiro Kuroda, Akiyuki Yokoyama, Takanobu Kushihira, Tadahiro Nakayama, Tsuyoshi Shinohara
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Publication number: 20060152900Abstract: 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: ApplicationFiled: January 7, 2005Publication date: July 13, 2006Inventors: Yoshifumi Nishi, Masahiro Kuroda, Sridhar Machiroutu, Himanshu Pokharna, Karen Stafford
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Publication number: 20060066270Abstract: 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: ApplicationFiled: September 22, 2005Publication date: March 30, 2006Inventors: Shin Kumagai, Shigeru Endo, Atsushi Horikoshi, Kazunobu Nagai, Masahiro Kuroda
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Patent number: 6934342Abstract: 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: GrantFiled: September 11, 2000Date of Patent: August 23, 2005Assignee: NEC CorporationInventors: Hiroyuki Ishii, Masahiro Kuroda, Yoshimitsu Iki
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Publication number: 20050116558Abstract: 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: ApplicationFiled: May 14, 2004Publication date: June 2, 2005Inventors: Akiyuki Yokoyama, Masahiro Kuroda, Tadahiro Nakayama, Shinichi Kominato, Tomokazu Harada, Yoshinori Saito
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Patent number: 6553091Abstract: 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: GrantFiled: June 21, 2001Date of Patent: April 22, 2003Assignee: Kabushiki Kaisha ToshibaInventors: Tetsuyuki Takanashi, Tomiya Sasaki, Yuichi Kasuya, Masahiro Kuroda
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Publication number: 20010055362Abstract: 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: ApplicationFiled: June 21, 2001Publication date: December 27, 2001Inventors: Tetsuyuki Takanashi, Tomiya Sasaki, Yuichi Kasuya, Masahiro Kuroda
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Patent number: 6311011Abstract: 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: GrantFiled: December 13, 1999Date of Patent: October 30, 2001Assignee: NEC CorporationInventor: Masahiro Kuroda
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Patent number: 5603366Abstract: 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: GrantFiled: March 21, 1995Date of Patent: February 18, 1997Assignee: Bridgestone CorporationInventors: Shohachiro Nakayama, Toyomi Iwata, Masahiro Kuroda, Naoyuki Goto, Hiroshi Ueda, Michio Ishii
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Patent number: 5531992Abstract: 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: GrantFiled: June 2, 1994Date of Patent: July 2, 1996Assignee: Kozo NiwaInventors: Hiroko Yamazaki, Masahiro Kuroda, Kozo Niwa
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Patent number: 5445691Abstract: 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: GrantFiled: September 14, 1993Date of Patent: August 29, 1995Assignee: Bridgestone CorporationInventors: Shohachiro Nakayama, Toyomi Iwata, Masahiro Kuroda, Naoyuki Goto, Hiroshi Ueda, Michio Ishii
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Patent number: 5275218Abstract: 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: GrantFiled: March 28, 1989Date of Patent: January 4, 1994Assignee: Bridgestone CorporationInventors: Shohachiro Nakayama, Toyomi Iwata, Masahiro Kuroda, Naoyuki Goto, Hiroshi Ueda, Michio Ishii
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Patent number: 5174214Abstract: 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: GrantFiled: February 16, 1990Date of Patent: December 29, 1992Assignees: Bridgestone Corporation, Railway Technical Research InstituteInventors: Kazuhiro Oda, Hideyuki Takizawa, Masayoshi Azakami, Yukimasa Yamada, Masahiro Kuroda
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Patent number: 5105865Abstract: 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: GrantFiled: December 19, 1989Date of Patent: April 21, 1992Assignee: Bridgestone CorporationInventors: Minoru Togashi, Takeshi Takanami, Masahiro Kuroda
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Patent number: 4939751Abstract: 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: GrantFiled: October 13, 1988Date of Patent: July 3, 1990Assignee: Anritsu CorporationInventor: Masahiro Kuroda