Patents by Inventor Kenichi Kurosawa
Kenichi Kurosawa 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: 20110228796Abstract: Provided is an on-vehicle network which can improve the network use efficiency and reduce the controller processor overhead even when the same communication cycle as the frame cannot be set in the filtering condition of a communication control device. A reference signal transmission controller is arranged in a network so as to generate and transmit a reference signal in accordance with the communication cycle. A reference signal reception controller receives the reference signal and compares the reference signals to a predetermined filtering condition table. If the signal is matched with the table, the controller executes a data reception process and a data transmission process.Type: ApplicationFiled: November 25, 2009Publication date: September 22, 2011Applicant: Hitachi Automotive Systems, Ltd.Inventors: Kunihiko Tsunedomi, Kenichi Kurosawa
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Publication number: 20100211258Abstract: In a vehicle control system in which a large number of ECUs operate in coordination via a network, each node has an intra-network node status determination section, other node's status decision transmitting/other nodes' status decision receiving section, and failed-node identification section. The nodes exchange decisions made by the intra-network node status evaluation section with other nodes and thereby identify failed node.Type: ApplicationFiled: May 3, 2010Publication date: August 19, 2010Applicant: Hitachi, Ltd.Inventors: Kohei SAKURAI, Yuichiro Morita, Masatoshi Hoshino, Yoshiaki Takahashi, Kenichi Kurosawa, Masahiro Matsubara
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Patent number: 7729827Abstract: In a vehicle control system in which a large number of ECUs operate in coordination via a network, each node has an intra-network node status determination section, other node's status decision transmitting/other nodes' status decision receiving section, and failed-node identification section. The nodes exchange decisions made by the intra-network node status evaluation section with other nodes and thereby identify failed node.Type: GrantFiled: September 28, 2006Date of Patent: June 1, 2010Assignee: Hitachi, Ltd.Inventors: Kohei Sakurai, Yuichiro Morita, Masatoshi Hoshino, Yoshiaki Takahashi, Kenichi Kurosawa, Masahiro Matsubara
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Publication number: 20100030421Abstract: A vehicle control system which can ensure high reliability, real-time processing, and expandability with a simplified ECU configuration and a low cost by backing up an error through coordination in the entire system without increasing a degree of redundancy of individual controllers beyond the least necessary level. The vehicle control system comprises a sensor controller for taking in sensor signals indicating a status variable of a vehicle and an operation amount applied from a driver, a command controller for generating a control target value based on the sensor signals taken in by the sensor controller, and an actuator controller for receiving the control target value from the command controller and operating an actuator to control the vehicle, those three controller being interconnected via a network.Type: ApplicationFiled: October 7, 2009Publication date: February 4, 2010Applicant: HITACHI, LTD.Inventors: Kentaro YOSHIMURA, Kohei Sakurai, Nobuyasu Kanekawa, Yuichiro Morita, Yoshiaki Takahashi, Kenichi Kurosawa, Toshimichi Minowa, Masatoshi Hoshino, Yasuhiro Nakatsuka, Kotaro Shimamura, Kunihiko Tsunedomi, Shoji Sasaki
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Patent number: 7630807Abstract: A vehicle control system which can ensure high reliability, real-time processing, and expandability with a simplified ECU configuration and a low cost by backing up an error through coordination in the entire system without increasing a degree of redundancy of individual controllers beyond the least necessary level. The vehicle control system comprises a sensor controller for taking in sensor signals indicating a status variable of a vehicle and an operation amount applied from a driver, a command controller for generating a control target value based on the sensor signals taken in by the sensor controller, and an actuator controller for receiving the control target value from the command controller and operating an actuator to control the vehicle, those three controller being interconnected via a network.Type: GrantFiled: March 31, 2005Date of Patent: December 8, 2009Assignee: Hitachi, Ltd.Inventors: Kentaro Yoshimura, Kohei Sakurai, Nobuyasu Kanekawa, Yuichiro Morita, Yoshiaki Takahashi, Kenichi Kurosawa, Toshimichi Minowa, Masatoshi Hoshino, Yasuhiro Nakatsuka, Kotaro Shimamura, Kunihiko Tsunedomi, Shoji Sasaki
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Publication number: 20090236552Abstract: The present invention provides a flow control valve that requires only a relatively small opening/closing drive force, is compact and does not induce a pulsating flow in the valve open state. A valve seat (3) is disposed in a pipeline (5) through which a fluid flows. A spherical valve element (12) assuming a diameter smaller than the inner diameter of the pipeline (5) is housed inside the pipeline (5). A vibrating motor (8), which eccentrically rotates the valve element (12) kept in contact with the inner wall of the pipeline (5) is disposed outside the pipelines (5) and (6).Type: ApplicationFiled: October 31, 2008Publication date: September 24, 2009Applicant: SMC CorporationInventors: Tetsuya Akagi, Shujiro Dohta, Shinichi Katayama, Kenichi Kurosawa
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Patent number: 7558483Abstract: The system includes optical bus-bridging devices for observing the modes of said electric buses and the modes of said optical fibers while said electric buses have not been driven (OFF mode), so that the modes of the two electric buses connected through optical fibers are brought into agreement and that the buses can be simultaneously driven by a plurality of nodes. While one or both of said electric buses have been driven (ON mode) by the nodes connected thereto, an optical output has been continuously produced from the buses that are being driven to said optical fibers, and while light has been inputted from said optical fibers, the modes of said buses are not observed, but an electric output is produced to the electric bus of the side to which light is inputted to drive the bus. The optical bus-bridging device changes the mode of the electric bus when the optical fiber does not change within a predetermined period of time after the optical bus-bridging device has outputted a signal to the optical fiber.Type: GrantFiled: July 23, 2004Date of Patent: July 7, 2009Assignee: Hitachi, Ltd.Inventors: Hiroshi Arita, Tetsuaki Nakamikawa, Kenichi Kurosawa, Hiroaki Fukumaru, Hisao Ogawa
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Publication number: 20070205384Abstract: A flow rate control apparatus includes a base section, wherein the base section is composed of a plurality of stacked metal plates. The flow rate control apparatus further includes a pressure control section, which regulates pressure of a pressure fluid (gas) that flows through a first passage in the base section, a pressure sensor that detects pressure of the pressure fluid flowing through a second passage, and a flow passage-switching section, including first to third orifices, for throttling the fluid pressure-regulated by the pressure control section so as to have a predetermined flow rate, and which has first to third ON/OFF valves for switching fourth to sixth passages for respectively directing the pressure fluid toward a pressure fluid output port.Type: ApplicationFiled: February 7, 2007Publication date: September 6, 2007Applicant: SMC Kabushiki KaishaInventor: Kenichi Kurosawa
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Publication number: 20070076593Abstract: In a vehicle control system in which a large number of ECUs operate in coordination via a network, each node has an intra-network node status determination section, other node's status decision transmitting/other nodes status decision receiving section, and failed-node identification section. The nodes exchange decisions made by the intra-network node status evaluation section with other nodes and thereby identify failed node.Type: ApplicationFiled: September 28, 2006Publication date: April 5, 2007Applicant: Hitachi, Ltd.Inventors: Kohei Sakurai, Yuichiro Morita, Masatoshi Hoshino, Yoshiaki Takahashi, Kenichi Kurosawa, Masahiro Matsubara
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Publication number: 20060015231Abstract: A vehicle control system which can ensure high reliability, real-time processing, and expandability with a simplified ECU configuration and a low cost by backing up an error through coordination in the entire system without increasing a degree of redundancy of individual controllers beyond the least necessary level. The vehicle control system comprises a sensor controller for taking in sensor signals indicating a status variable of a vehicle and an operation amount applied from a driver, a command controller for generating a control target value based on the sensor signals taken in by the sensor controller, and an actuator controller for receiving the control target value from the command controller and operating an actuator to control the vehicle, those three controller being interconnected via a network.Type: ApplicationFiled: March 31, 2005Publication date: January 19, 2006Inventors: Kentaro Yoshimura, Kohei Sakurai, Nobuyasu Kanekawa, Yuichiro Morita, Yoshiaki Takahashi, Kenichi Kurosawa, Toshimichi Minowa, Masatoshi Hoshino, Yasuhiro Nakatsuka, Kotaro Shimamura, Kunihiko Tsunedomi, Shoji Sasaki
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Publication number: 20040268011Abstract: The system includes optical bus-bridging devices for observing the modes of said electric buses and the modes of said optical fibers while said electric buses have not been driven (OFF mode), so that the modes of the two electric buses connected through optical fibers are brought into agreement and that the buses can be simultaneously driven by a plurality of nodes. While one or both of said electric buses have been driven (ON mode) by the nodes connected thereto, an optical output has been continuously produced from the buses that are being driven to said optical fibers, and while light has been inputted from said optical fibers, the modes of said buses are not observed, but an electric output is produced to the electric bus of the side to which light is inputted to drive the bus. The optical bus-bridging device changes the mode of the electric bus when the optical fiber does not change within a predetermined period of time after the optical bus-bridging device has outputted a signal to the optical fiber.Type: ApplicationFiled: July 23, 2004Publication date: December 30, 2004Inventors: Hiroshi Arita, Tetsuaki Nakamikawa, Kenichi Kurosawa, Hiroaki Fukumaru, Hisao Ogawa
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Patent number: 6782202Abstract: The system includes optical bus-bridging devices for observing the modes of said electric buses and the modes of said optical fibers while said electric buses have not been driven (OFF mode), so that the modes of the two electric buses connected through optical fibers are brought into agreement and that the buses can be simultaneously driven by a plurality of nodes. While one or both of said electric buses have been driven (ON mode) by the nodes connected thereto, an optical output has been continuously produced from the buses that are being driven to said optical fibers, and while light has been inputted from said optical fibers, the modes of said buses are not observed, but an electric output is produced to the electric bus of the side to which light is inputted to drive the bus. The optical bus-bridging device changes the mode of the electric bus when the optical fiber does not change within a predetermined period of time after the optical bus-bridging device has outputted a signal to the optical fiber.Type: GrantFiled: May 29, 2001Date of Patent: August 24, 2004Assignee: Hitachi, Ltd.Inventors: Hiroshi Arita, Tetsuaki Nakamikawa, Kenichi Kurosawa, Hiroaki Fukumaru, Hisao Ogawa
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Patent number: 6728811Abstract: There is provided an input/output device having of not exerting any adverse influence on other expansion devices connected to a system bus at the time of insertion or removal. An expansion device 800 comprises an electronic circuit 400 and a MOS switch 300, and is connected to a system bus (BUS) via a connector having long and short pins. The expansion device 800 two power supply systems, namely a stable power supply 250 and an unstable power supply 260. At the time of insertion or removal of the expansion device 800, power is provided to the MOS switch 300 and a high impedance maintaining circuit from the stable power supply via a pair of long pins, so as to reliably place the MOS switch 300 in a high impedance state, inside the expansion device the high impedance maintaining circuit 350 drives an open/close control terminal, and power is provided to the electronic circuit 400 from the unstable power supply 260.Type: GrantFiled: May 9, 2002Date of Patent: April 27, 2004Assignee: Hitachi, Ltd.Inventors: Tsutomu Yamada, Kenichi Kurosawa, Yasuo Kaminaga, Kouji Masui, Akihiro Ohashi
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Patent number: 6631447Abstract: To provide a large scale multiprocessor system capable of executing an area limited cache coherency control implementing a high speed operation while substantially reducing the amount of processor-to-processor communications there is provided a translation lookaside buffer which retains cache coherency attribute information defining a limitable cache coherent area to maintain data consistency among caches, and a processor memory interface unit includes a cache coherency control which identifies whether cache coherency is required only within a particular cluster of processors or is required for every one of the cache memories in every one of the clusters throughout the system, on the basis of the contents of the cache coherency attribute information. Further, in another version of large scale multiprocessor system, each cluster may be provided with an export directory which registers an identifier of data whose copy is cached in cache memories in other clusters.Type: GrantFiled: March 26, 1997Date of Patent: October 7, 2003Assignee: Hitachi, Ltd.Inventors: Michio Morioka, Kenichi Kurosawa, Tetsuaki Nakamikawa, Sakoh Ishikawa
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Patent number: 6561216Abstract: A flow controller for controlling a flow rate of a fluid flowing through a fluid passage comprises a control valve for which a degree of opening of a valve is adjusted by a control signal, an orifice arranged on an outflow side of the control valve, a combined sensor arranged on an inflow side of the orifice for almost simultaneously detecting a pressure and a temperature of the fluid, and a control circuit. The combined sensor includes a pressure-detecting element for deriving a detection signal corresponding to the pressure of the fluid, and a temperature-detecting element for deriving a detection signal corresponding to the temperature of the fluid. The pressure-detecting element and the temperature-detecting element are arranged closely to one another on an identical surface of a pressure-receiving section.Type: GrantFiled: January 19, 2001Date of Patent: May 13, 2003Assignee: SMC Kabushiki KaishaInventor: Kenichi Kurosawa
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Publication number: 20020133660Abstract: There is provided an input/output device having of not exerting any adverse influence on other expansion devices connected to a system bus at the time of insertion or removal.Type: ApplicationFiled: May 9, 2002Publication date: September 19, 2002Inventors: Tsutomu Yamada, Kenichi Kurosawa, Yasuo Kaminaga, Kouji Masui, Akihiro Ohashi
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Patent number: 6393509Abstract: There is provided an input/output device having of not exerting any adverse influence on other expansion devices connected to a system bus at the time of insertion or removal. An expansion device 800 comprises an electronic circuit 400 and a MOS switch 300, and is connected to a system bus (BUS) via a connector having long and short pins. The expansion device 800 two power supply systems, namely a stable power supply 250 and an unstable power supply 260. At the time of insertion or removal of the expansion device 800, power is provided to the MOS switch 300 and a high impedance maintaining circuit from the stable power supply via a pair of long pins, so as to reliably place the MOS switch 300 in a high impedance state, inside the expansion device the high impedance maintaining circuit 350 drives an open/close control terminal, and power is provided to the electronic circuit 400 from the unstable power supply 260.Type: GrantFiled: August 21, 2001Date of Patent: May 21, 2002Assignee: Hitachi, Ltd.Inventors: Tsutomu Yamada, Kenichi Kurosawa, Yasuo Kaminaga, Kouji Masui, Akihiro Ohashi
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Publication number: 20020004914Abstract: There is provided an input/output device having of not exerting any adverse influence on other expansion devices connected to a system bus at the time of insertion or removal.Type: ApplicationFiled: August 21, 2001Publication date: January 10, 2002Inventors: Tsutomu Yamada, Kenichi Kurosawa, Yasuo Kaminaga, Kouji Masui
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Publication number: 20010028487Abstract: The system includes optical bus-bridging devices for observing the modes of said electric buses and the modes of said optical fibers while said electric buses have not been driven (OFF mode), so that the modes of the two electric buses connected through optical fibers are brought into agreement and that the buses can be simultaneously driven by a plurality of nodes. While one or both of said electric buses have been driven (ON mode) by the nodes connected thereto, an optical output has been continuously produced from the buses that are being driven to said optical fibers, and while light has been inputted from said optical fibers, the modes of said buses are not observed, but an electric output is produced to the electric bus of the side to which light is inputted to drive the bus. The optical bus-bridging device changes the mode of the electric bus when the optical fiber does not change within a predetermined period of time after the optical bus-bridging device has outputted a signal to the optical fiber.Type: ApplicationFiled: May 29, 2001Publication date: October 11, 2001Applicant: Hitachi, Ltd.Inventors: Hiroshi Arita, Tetsuaki Nakamikawa, Kenichi Kurosawa, Hiroaki Fukumaru, Hisao Ogawa
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Patent number: 6289407Abstract: There is provided an input/output device having of not exerting any adverse influence on other expansion devices connected to a system bus at the time of insertion or removal. An expansion device 800 comprises an electronic circuit 400 and a MOS switch 300, and is connected to a system bus (BUS) via a connector having long and short pins. The expansion device 800 two power supply systems, namely a stable power supply 250 and an unstable power supply 260. At the time of insertion or removal of the expansion device 800, power is provided to the MOS switch 300 and a high impedance maintaining circuit from the stable power supply via a pair of long pins, so as to reliably place the MOS switch 300 in a high impedance state, inside the expansion device the high impedance maintaining circuit 350 drives an open/close control terminal, and power is provided to the electronic circuit 400 from the unstable power supply 260.Type: GrantFiled: February 8, 2000Date of Patent: September 11, 2001Assignee: Hitachi, Ltd.Inventors: Tsutomu Yamada, Kenichi Kurosawa, Yasuo Kaminaga, Kouji Masui, Akihiro Ohashi