Patents by Inventor Hirofumi Shimizu
Hirofumi Shimizu 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: 9647514Abstract: A motor control unit is obtained by integrating an inverter unit and a motor unit having a motor, the inverter unit having a control board erected on a support board.Type: GrantFiled: February 4, 2013Date of Patent: May 9, 2017Assignee: Nissan Motor Co., Ltd.Inventors: Akihiro Katakami, Tomoki Kawamura, Hirofumi Shimizu, Hiroaki Takahashi
-
Publication number: 20170064806Abstract: Provided are a plasma generation apparatus including a measurement device and capable of controlling conditions of plasma properly and stably, and a plasma thruster using the plasma generation apparatus. A plasma generation apparatus including a measurement device of the present invention includes a discharge vessel, a light-emitting monitor, a probe measuring instrument, a control device, and an optical axis driving unit. The discharge vessel ionizes gas which is introduced to an inside thereof so as to generate plasma. The light-emitting monitor measures electron density of the plasma by emission spectra of the plasma. The probe measuring instrument measures the electron density of the plasma by a probe disposed in the discharge vessel.Type: ApplicationFiled: April 10, 2015Publication date: March 2, 2017Inventors: Tatsufumi AOI, Kengo YAMAGUCHI, Ryuichi MATSUDA, Akio IKEDA, Hirofumi SHIMIZU, Takuya YAMAZAKI, Tatsuya KIMURA
-
Patent number: 9566851Abstract: A mounting structure of a high voltage unit for an electric vehicle includes a first high voltage unit that has vehicle body fixing parts to be fixed to a vehicle body at both ends in a width direction, and a second high voltage unit that is arranged on an upper side of the first high voltage unit in a vertical direction of the vehicle, in which, in the second high voltage unit, a high voltage heavy component included in the second high voltage unit is arranged closer to a lowermost surface in the vertical direction of the vehicle.Type: GrantFiled: September 17, 2013Date of Patent: February 14, 2017Assignee: NISSAN MOTOR CO., LTD.Inventors: Tomoki Kawamura, Hirofumi Shimizu, Nobuaki Yokoyama, Izuho Hirano
-
Patent number: 9561762Abstract: An electric unit is attached to a power unit including a motor-generator, the power unit being disposed in a power unit mounting chamber that is formed at a front of a vehicle and separated from a vehicle cabin by a partition wall. The electric unit includes: a high-voltage component including an electric power conversion device of a relatively high voltage, the electric power conversion device converting an electric power between a DC electric power and an AC electric power for the motor-generator; and a low-voltage component including a control device of a relatively low voltage, the control device controlling the electric power conversion device. The high-voltage component and the low-voltage component are accommodated in an accommodation case. Inside the accommodation case, the high-voltage component is arranged toward the front of the vehicle, and the low-voltage component is arranged toward a rear of the vehicle.Type: GrantFiled: February 22, 2013Date of Patent: February 7, 2017Assignee: NISSAN MOTOR CO., LTD.Inventors: Masahiro Miyashita, Hirofumi Shimizu, Akihiro Katakami, Hiroaki Takahashi
-
Patent number: 9484819Abstract: A regulator device includes: a plurality of regulators that are equipped in parallel between a power input terminal and a power output terminal and converts a power inputted from the power input terminal to output to the power output terminal; a dummy load circuit that is coupled to a power output system different from a power output system to the respective power output terminal of the plurality of regulators; a selector that selects a regulator to carry out an output to the power output terminal and a regulator to carry out an output to the dummy load circuit among the plurality of regulators; and a controller that obtains conversion efficiency characteristic information representing a characteristic of power conversion efficiency relative to a current flowing in the dummy load circuit for the regulator to carry out an output to the dummy load circuit.Type: GrantFiled: October 1, 2012Date of Patent: November 1, 2016Assignee: FUJITSU LIMITEDInventors: Katsutoshi Kondo, Kazunori Kasuga, Hirofumi Shimizu
-
Patent number: 9197130Abstract: A regulator device includes: a power input terminal; a power output terminal; a plurality of regulators each including an operating FET and a monitoring FET to be driven together with the operating FET, the plurality of regulators being arranged in parallel between the power input terminal and the power output terminal; and a controller configured to drive the operating FET and the monitoring FET included in one of the regulators, when the controller determines whether the monitoring FET included in the one of the regulators have degraded, the controller configured to stop driving the operating FET and the monitoring FET included in the one of the regulators and configured to drive the operating FET and the monitoring FET included in another of the regulators.Type: GrantFiled: June 27, 2013Date of Patent: November 24, 2015Assignee: FUJITSU LIMITEDInventors: Hirofumi Shimizu, Kazunori Kasuga, Katsutoshi Kondo
-
Publication number: 20150273994Abstract: A mounting structure of a high voltage unit for an electric vehicle includes a first high voltage unit that has vehicle body fixing parts to be fixed to a vehicle body at both ends in a width direction, and a second high voltage unit that is arranged on an upper side of the first high voltage unit in a vertical direction of the vehicle, in which, in the second high voltage unit, a high voltage heavy component included in the second high voltage unit is arranged closer to a lowermost surface in the vertical direction of the vehicle.Type: ApplicationFiled: September 17, 2013Publication date: October 1, 2015Applicant: NISSAN MOTOR CO., LTD.Inventors: Tomoki Kawamura, Hirofumi Shimizu, Nobuaki Yokoyama, Izuho Hirano
-
Patent number: 8987572Abstract: A system and method for teaching a user to discriminate and match musical pitch is disclosed. A pitch module generates a first melodic sequence for a user. The pitch module generates at least two symbolically depicted sequences including a first symbolic sequence that represents a pitch frequency that, when played, matches the first melodic sequence. A tracking module receives a selection of the first symbolic sequence and advances to a next level in response to receiving the selection of the first symbolic sequence.Type: GrantFiled: December 28, 2012Date of Patent: March 24, 2015Assignee: Generategy LLCInventors: Hirofumi Shimizu, Paul T. Andronis, Melinda Sota, Nathan Rollins, Nattapong Thangvijit, Terrence Layng, Marta Leon, Jay Thompson, Nathan Skone
-
Publication number: 20150043132Abstract: An electric unit is attached to a power unit including a motor-generator, the power unit being disposed in a power unit mounting chamber that is formed at a front of a vehicle and separated from a vehicle cabin by a partition wall. The electric unit includes: a high-voltage component including an electric power conversion device of a relatively high voltage, the electric power conversion device converting an electric power between a DC electric power and an AC electric power for the motor-generator; and a low-voltage component including a control device of a relatively low voltage, the control device controlling the electric power conversion device. The high-voltage component and the low-voltage component are accommodated in an accommodation case. Inside the accommodation case, the high-voltage component is arranged toward the front of the vehicle, and the low-voltage component is arranged toward a rear of the vehicle.Type: ApplicationFiled: February 22, 2013Publication date: February 12, 2015Applicant: NISSAN MOTOR CO., LTD.Inventors: Masahiro Miyashita, Hirofumi Shimizu, Akihiro Katakami, Hiroaki Takahashi
-
Publication number: 20150008804Abstract: A motor control unit is obtained by integrating an inverter unit and a motor unit having a motor, the inverter unit having a control board erected on a support board.Type: ApplicationFiled: February 4, 2013Publication date: January 8, 2015Inventors: Akihiro Katakami, Tomoki Kawamura, Hirofumi Shimizu, Hiroaki Takahashi
-
Publication number: 20140362005Abstract: An information terminal device includes an input unit that inputs, when a touch operation performed in a detection area that is associated with one of keys of a software keyboard displayed on a screen has been detected, a character associated with the key in the detection area. The information terminal device includes a determining unit that determines, when a modification of a character input by the input unit has been detected, whether the key of the pre-modification character is adjacent to a key of a post-modification character in the layout of the software keyboard. The information terminal device includes a correcting unit that extends, when the determining unit determines that the key of the pre-modification character is adjacent to the key of the post-modification character, the detection area of the key associated with the post-modification character in the arrangement direction of the key that is associated with the pre-modification character.Type: ApplicationFiled: April 30, 2014Publication date: December 11, 2014Applicant: FUJITSU LIMITEDInventors: Yuko Yazawa, Kazunori Kasuga, Hirofumi Shimizu, Katsutoshi Kondo
-
Patent number: 8680826Abstract: A regulator apparatus having an input terminal and an output terminal, the regulator apparatus includes: a plurality of regulators arranged in parallel between the input terminal and the output terminal; an conversion efficiency characteristic information obtaining unit that obtains conversion efficiency characteristic information representing a characteristic of a conversion efficiency with respect to an output current with regard to each of the plurality of regulators; a memory that stores the conversion efficiency characteristic information of each of the plurality of regulators obtained by the conversion efficiency characteristic information obtaining unit; and a switching control unit that performs a switching control on the plurality of regulators based on a value of the output current output from the output terminal and the conversion efficiency characteristic information stored in the memory.Type: GrantFiled: June 20, 2011Date of Patent: March 25, 2014Assignee: Fujitsu LimitedInventors: Katsutoshi Kondo, Kazunori Kasuga, Hirofumi Shimizu
-
Publication number: 20140049242Abstract: A regulator device includes: a power input terminal; a power output terminal; a plurality of regulators each including an operating FET and a monitoring FET to be driven together with the operating FET, the plurality of regulators being arranged in parallel between the power input terminal and the power output terminal; and a controller configured to drive the operating FET and the monitoring FET included in one of the regulators, when the controller determines whether the monitoring FET included in the one of the regulators have degraded, the controller configured to stop driving the operating FET and the monitoring FET included in the one of the regulators and configured to drive the operating FET and the monitoring FET included in another of the regulators.Type: ApplicationFiled: June 27, 2013Publication date: February 20, 2014Applicant: FUJITSU LIMITEDInventors: Hirofumi Shimizu, Kazunori Kasuga, Katsutoshi Kondo
-
Publication number: 20120210451Abstract: A polymer that changes hydration at a temperature between 0 to 80° C. is coated on the surface of a cell culture support, and islet cells are cultured on the support at a temperature range that causes polymer to have weak hydration, then the temperature of a culture solution is changed to a temperature that causes the polymer to have strong hydration to obtain islet cells in a sheet form. Such islet cells in a sheet form have an insulin producing function even if there is no blood flow.Type: ApplicationFiled: August 2, 2010Publication date: August 16, 2012Inventors: Hirofumi Shimizu, Kazuo Ohashi, Rie Utoh, Kazuya Ise, Masayuki Yamato, Teruo Okano, Mitsukazu Gotoh
-
Publication number: 20110309811Abstract: A regulator apparatus having an input terminal and an output terminal, the regulator apparatus includes: a plurality of regulators arranged in parallel between the input terminal and the output terminal; an conversion efficiency characteristic information obtaining unit that obtains conversion efficiency characteristic information representing a characteristic of a conversion efficiency with respect to an output current with regard to each of the plurality of regulators; a memory that stores the conversion efficiency characteristic information of each of the plurality of regulators obtained by the conversion efficiency characteristic information obtaining unit; and a switching control unit that performs a switching control on the plurality of regulators based on a value of the output current output from the output terminal and the conversion efficiency characteristic information stored in the memory.Type: ApplicationFiled: June 20, 2011Publication date: December 22, 2011Applicant: Fujitsu LimitedInventors: Katsutoshi KONDO, Kazunori Kasuga, Hirofumi Shimizu
-
Publication number: 20100295840Abstract: When a power supply switch is turned on, a signal generation circuit generates a starting video signal for an all-white display for a given period of time. A selector outputs the starting video signal generated by the signal generation circuit to a liquid crystal display panel drive circuit. This causes the all-white display to be performed on a screen of a liquid crystal display panel for the given period of time. A lighting voltage is applied to a fluorescent lamp of a backlight unit by an inverter power supply circuit at a given timing in the given period of time.Type: ApplicationFiled: January 27, 2009Publication date: November 25, 2010Applicant: PANASONIC CORPORATIONInventors: Takashi Uno, Hirofumi Shimizu
-
Patent number: 7730366Abstract: In a digital PLL system, instead of measuring a binarized playback RF signal with a high frequency clock, pulse-length data is generated by using N phase clocks (for example, 16 phase clocks). The pulse-length data is then counted with a virtual channel clock so as to extract run-length data. In this digital PLL system, the number of changing points of an asynchronous signal during an interval between adjacent clocks of the N phase clocks is detected so as to determine phase errors from the detected number of changing points. Phase errors are also determined from the timing relationship between changing points of a signal synchronized with the N phase clocks and each clock of the N phase clocks.Type: GrantFiled: June 30, 2004Date of Patent: June 1, 2010Assignee: Sony CorporationInventors: Shinobu Nakamura, Mamoru Kudo, Satoru Ooshima, Jun Yamane, Hirofumi Shimizu
-
Publication number: 20100041441Abstract: According to an aspect of the invention there is provided an electronic apparatus including: a controller configured to execute a first application program and a second application program; a display module including a screen configured to simultaneously display a first window for the first application program and a second window for the second application program; an extraction module configured to extract information related to the first application program when the first and second windows are displayed on the screen and the first window is inactive; and a reference module configured to refer to the information in the second application program when the first and second windows are displayed on the screen and the second window is active.Type: ApplicationFiled: March 12, 2009Publication date: February 18, 2010Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Masaru Kato, Hirofumi Shimizu
-
Publication number: 20100021871Abstract: A creation system and method for creating routines for teaching comprehension are described. The system identifies the skill to be taught, determines one or more features for the identified skill and determines a sequence of routines based on the determined one or more features. A performance system and method for performing the determined routines are also described. The performance system identifies the skill to be taught, determines the sequence of routines for the skill and presents the sequence to the learners. The performance system also provides feedback to the learners for their responses and modifies the sequence of routines based of the learners' responses.Type: ApplicationFiled: July 24, 2009Publication date: January 28, 2010Inventors: Terrence V. Layng, Victoria Ford, Marta E. Leon, Hirofumi Shimizu, Melinda S. Sota, Janet S. Twyman
-
Patent number: 7653346Abstract: A communication terminal device, a communication system, a communication method, and a program which allow efficient communication processing via multicast communication, along with power saving. The communication terminal devices includes a wireless communication unit comprising: a multicast ACK generating unit which makes it possible to transmit packets having an ACK function; a multicast ACK analysis unit which analyzes received packet data for ACK information; wireless transmission and reception units which perform modulation and demodulation processing; and a central control unit and a timing control unit which control these components. The ACK function is thus implemented by multicast packets in multicast communication. This makes it possible to check if its own transmission data is received by other stations (communication terminals).Type: GrantFiled: March 3, 2006Date of Patent: January 26, 2010Assignee: Sony CorporationInventors: Jun Nishihara, Hirofumi Shimizu