Patents by Inventor Kazuhiro Matsushita
Kazuhiro Matsushita 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: 20100294565Abstract: A Sn—Ag—Cu—Bi lead-free solder which can be used for soldering of vehicle-mounted electronic circuits and which has excellent resistance to heat cycles and mechanical strength is provided. The solder consists essentially of Ag: 2.8-4 mass %, Bi: 1.5-6 mass %, Cu: 0.8-1.2 mass %, and a remainder of Sn.Type: ApplicationFiled: July 14, 2008Publication date: November 25, 2010Inventors: Yuji Kawamata, Minoru Ueshima, Tomu Tamura, Kazuhiro Matsushita, Masashi Sakamoto
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Publication number: 20090264163Abstract: The present invention provides a semiconductor integrated circuit device and a non-contact type IC card and a portable information terminal which uses the semiconductor integrated circuit device. The semiconductor integrated circuit device includes antenna terminals LA, LB which are connected to an antenna L1, a power source circuit B5 which has a rectifier/smoothing circuit B1 which obtains a DC voltage by rectifying and smoothing an AC signal which is supplied to the antenna terminal from the antenna and a shunt regulator B6 and a series regulator B7 which stabilize the DC voltage, and an internal circuit B8 which is operated upon the supply of the DC voltage from the power source circuit. The series regulator operates and the shunt regulator stops in a stage that a signal is transmitted to a reader/writer. The shunt regulator operates and the series regulator stops in a stage other than the stage that the signal is transmitted to the reader/writer.Type: ApplicationFiled: March 3, 2009Publication date: October 22, 2009Inventors: Kazuki WATANABE, Kazuhiro Matsushita, Masaru Kubota
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Publication number: 20090160652Abstract: The present invention provides a semiconductor integrated circuit device and a non-contact type IC card and a portable information terminal which uses the semiconductor integrated circuit device. The semiconductor integrated circuit device includes antenna terminals LA, LB which are connected to an antenna L1, a power source circuit B5 which has a rectifier/smoothing circuit B1 which obtains a DC voltage by rectifying and smoothing an AC signal which is supplied to the antenna terminal from the antenna and a shunt regulator B6 and a series regulator B7 which stabilize the DC voltage, and an internal circuit B8 which is operated upon the supply of the DC voltage from the power source circuit. The series regulator operates and the shunt regulator stops in a stage that a signal is transmitted to a reader/writer. The shunt regulator operates and the series regulator stops in a stage other than the stage that the signal is transmitted to the reader/writer.Type: ApplicationFiled: March 3, 2009Publication date: June 25, 2009Inventors: Kazuki WATANABE, Kazuhiro Matsushita, Masaru Kubota
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Patent number: 7505794Abstract: The present invention provides a semiconductor integrated circuit device and a non-contact type IC card and a portable information terminal which uses the semiconductor integrated circuit device. The semiconductor integrated circuit device includes antenna terminals LA, LB which are connected to an antenna L1, a power source circuit B5 which has a rectifier/smoothing circuit B1 which obtains a DC voltage by rectifying and smoothing an AC signal which is supplied to the antenna terminal from the antenna and a shunt regulator B6 and a series regulator B7 which stabilize the DC voltage, and an internal circuit B8 which is operated upon the supply of the DC voltage from the power source circuit. The series regulator operates and the shunt regulator stops in a stage that a signal is transmitted to a reader/writer. The shunt regulator operates and the series regulator stops in a stage other than the stage that the signal is transmitted to the reader/writer.Type: GrantFiled: January 30, 2004Date of Patent: March 17, 2009Assignee: Renesas Technology Corp.Inventors: Kazuki Watanabe, Kazuhiro Matsushita, Masaru Kubota
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Patent number: 7441711Abstract: In an IC card in which an internal circuit is operated by an internal power supply formed from alternate current from outside received by an antenna, the voltage of the internal power supply sometimes changes due to the operation of the internal circuit. Therefore, the voltage controlling circuit of the present invention includes a voltage controlling current source, and when the internal circuit is not operated and the current higher than a predetermined current is detected in the voltage controlling current source, an operating current detector circuit outputs an enable signal. When the internal circuit is operated in response to the enable signal, the current consumed in the internal circuit is subtracted from the current passing through the voltage controlling current source. Consequently, the current change in the entire internal power supply can be prevented, and the output voltage of the internal power supply can be kept constant.Type: GrantFiled: January 9, 2007Date of Patent: October 28, 2008Assignees: Renesas Technology Corp., Hitachi Ulsi Systems Co., Ltd.Inventors: Kazuki Watanabe, Hisataka Tsunoda, Norihisa Yamamoto, Kazuhiro Matsushita
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Publication number: 20080093466Abstract: In an IC card of dual-way type which is used in common as a non-contact/contact operation card, an isolation transistor is provided between a power supply voltage terminal and a contact power supply circuit. Non-contact/contact judging and switching unit 6 turns OFF, when it is detected that the IC card is operated in a non-contact operation mode, an isolation transistor to isolate between the power supply voltage terminal and contact power supply circuit. Accordingly, when the power supply voltage terminal is terminated with a ground terminal during the non-contact operation mode, erroneous operation of the IC card can surely be prevented. Since the power supply voltage terminal becomes equal to a reference potential in this case, monitoring of voltage of the power supply voltage terminal can be prevented and security of the IC card can also be improved remarkably.Type: ApplicationFiled: December 10, 2007Publication date: April 24, 2008Inventors: Hisataka Tsunoda, Keisuke Takata, Kazuki Watanabe, Norihisa Yamamoto, Kazuhiro Matsushita
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Patent number: 7343401Abstract: A remote maintenance apparatus is provided. The remote maintenance apparatus includes: a first obtaining part which obtains configuration information of terminals sent from the terminals; a storing part which stores the configuration information while bringing the configuration information into correspondence with generation information; a second obtaining part which obtains configuration information of a failed terminal; and an extraction part which extracts difference information between configuration information obtained by the second obtaining part and configuration information stored in the storing part which has older generation.Type: GrantFiled: March 22, 2001Date of Patent: March 11, 2008Assignee: Fujitsu LimitedInventors: Ikuko Tachibana, Akira Ohtsuka, Hideki Ise, Kazuhiro Matsushita, Hideki Yoshida, Kazuhiko Itoh
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Publication number: 20070108301Abstract: In an IC card in which an internal circuit is operated by an internal power supply formed from alternate current from outside received by an antenna, the voltage of the internal power supply sometimes changes due to the operation of the internal circuit. Therefore, the voltage controlling circuit of the present invention includes a voltage controlling current source, and when the internal circuit is not operated and the current higher than a predetermined current is detected in the voltage controlling current source, an operating current detector circuit outputs an enable signal. When the internal circuit is operated in response to the enable signal, the current consumed in the internal circuit is subtracted from the current passing through the voltage controlling current source. Consequently, the current change in the entire internal power supply can be prevented, and the output voltage of the internal power supply can be kept constant.Type: ApplicationFiled: January 9, 2007Publication date: May 17, 2007Inventors: Kazuki Watanabe, Hisataka Tsunoda, Norihisa Yamamoto, Kazuhiro Matsushita
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Patent number: 7168624Abstract: In an IC card in which an internal circuit is operated by an internal power supply formed from alternate current from outside received by an antenna, the voltage of the internal power supply sometimes changes due to the operation of the internal circuit. Therefore, the voltage controlling circuit of the present invention includes a voltage controlling current source, and when the internal circuit is not operated and the current higher than a predetermined current is detected in the voltage controlling current source, an operating current detector circuit outputs an enable signal. When the internal circuit is operated in response to the enable signal, the current consumed in the internal circuit is subtracted from the current passing through the voltage controlling current source. Consequently, the current change in the entire internal power supply can be prevented, and the output voltage of the internal power supply can be kept constant.Type: GrantFiled: April 26, 2002Date of Patent: January 30, 2007Assignees: Renesas Technology Corp., Hitachi ULSI Systems Co., Ltd.Inventors: Kazuki Watanabe, Hisataka Tsunoda, Norihisa Yamamoto, Kazuhiro Matsushita
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Publication number: 20050277241Abstract: In an IC card in which an internal circuit is operated by an internal power supply formed from alternate current from outside received by an antenna, the voltage of the internal power supply sometimes changes due to the operation of the internal circuit. Therefore, the voltage controlling circuit of the present invention includes a voltage controlling current source, and when the internal circuit is not operated and the current higher than a predetermined current is detected in the voltage controlling current source, an operating current detector circuit outputs an enable signal. When the internal circuit is operated in response to the enable signal, the current consumed in the internal circuit is subtracted from the current passing through the voltage controlling current source. Consequently, the current change in the entire internal power supply can be prevented, and the output voltage of the internal power supply can be kept constant.Type: ApplicationFiled: April 26, 2002Publication date: December 15, 2005Inventors: Kazuki Watanabe, Hisataka Tsunoda, Norihisa Yamamoto, Kazuhiro Matsushita
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Patent number: 6971095Abstract: A reception unit receives resource information transmitted through a network and constituted by a resource for version-up and an application program which applies the resource and stores the resource information in an operation region of a storage device. A decision unit decides whether an application occasion of the resource stored has come or not. When it is decided that the application occasion has come, an execution unit performs a process of copying the resource information in a maintenance region of the storage device and making the maintenance region valid in the next boot-up operation of a system.Type: GrantFiled: February 20, 2001Date of Patent: November 29, 2005Assignee: Fujitsu LimitedInventors: Giro Hirai, Mikayo Kosugi, Shouichi Matsuoka, Yasushi Makiyama, Takanori Shimizu, Kazuhiro Matsushita, Junichi Nagase
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Patent number: 6869109Abstract: A recessed portion is formed on an outer periphery of a cylindrical joint body to be inserted into a joint mounting hole of a fluid pressure apparatus. A pull-out preventing ring which is formed separately from the joint body can be deformed elastically in a radial direction, and has one or more annular edge(s) on an outer peripheral face which is fitted in the recessed portion and over the outer periphery of the joint body. The annular edge(s) of the pull-out preventing ring is(are) locked to a hole wall of the joint mounting hole when a force in such a direction as to pull out the pipe joint acts on the pipe joint.Type: GrantFiled: September 9, 2003Date of Patent: March 22, 2005Assignee: SMC CorporationInventor: Kazuhiro Matsushita
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Patent number: 6795353Abstract: A nonvolatile memory device and a data processing system with a reduced layout area are capable of efficiently generating a high voltage without deteriorating the charge transfer efficiency of a charge pump circuit. The charge pump circuit in a nonvolatile memory device includes a plurality of stages of charge pump unit circuits. A voltage generating unit provides, as a control signal to the gate of a first MOS transistor for transferring charges from a first capacitor of a charge pump unit circuit of one stage to a first capacitor at the next stage, a fourth signal having an amplitude of a difference voltage between the power supply voltage and the charge pump voltage of the first capacitor at the one stage. The fourth control signal is obtained from second and third signals each changing in amplitude of the power supply voltage. The second signal is supplied via a second capacitor.Type: GrantFiled: July 2, 2002Date of Patent: September 21, 2004Assignees: Renesas Technology Corp., Hitachi ULSI Systems Co., Ltd.Inventors: Yuki Matsuda, Norihisa Yamamoto, Kazuhiro Matsushita, Kazuki Watanabe
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Publication number: 20040080161Abstract: A recessed portion is formed on an outer periphery of a cylindrical joint body to be inserted into a joint mounting hole of a fluid pressure apparatus. A pull-out preventing ring which is formed separately from the joint body can be deformed elastically in a radial direction, and has one or more annular edge(s) on an outer peripheral face which is fitted in the recessed portion and over the outer periphery of the joint body. The annular edge(s) of the pull-out preventing ring is(are) locked to a hole wall of the joint mounting hole when a force in such a direction as to pull out the pipe joint acts on the pipe joint.Type: ApplicationFiled: September 9, 2003Publication date: April 29, 2004Inventor: Kazuhiro Matsushita
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Publication number: 20030230631Abstract: In an IC card of dual-way type which is used in common as a non-contact/contact operation card, an isolation transistor is provided between a power supply voltage terminal and a contact power supply circuit. Non-contact/contact judging and switching unit 6 turns OFF, when it is detected that the IC card is operated in a non-contact operation mode, an isolation transistor to isolate between the power supply voltage terminal and contact power supply circuit. Accordingly, when the power supply voltage terminal is terminated with a ground terminal during the non-contact operation mode, erroneous operation of the IC card can surely be prevented. Since the power supply voltage terminal becomes equal to a reference potential in this case, monitoring of voltage of the power supply voltage terminal can be prevented and security of the IC card can also be improved remarkably.Type: ApplicationFiled: June 2, 2003Publication date: December 18, 2003Applicants: Hitachi, Ltd., Hitachi ULSI Systems Co., Ltd.Inventors: Hisataka Tsunoda, Keisuke Takata, Kazuki Watanabe, Norihisa Yamamoto, Kazuhiro Matsushita
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Publication number: 20030035846Abstract: Fine-clustered water made from pure water is obtained by fine clustering treatment of pure water and is able to disperse at least about 1.5 times as much glyceryl trioleate as purified water can disperse.Type: ApplicationFiled: April 9, 2002Publication date: February 20, 2003Inventors: Toshimitsu Hattori, Kazuhiro Matsushita
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Patent number: 6514340Abstract: The present invention provides a lubricant coat forming apparatus for forming a dry coat of water dry type lubricant on the surface of each of cold plastic working materials. The apparatus includes a heating unit for heating the cold plastic working materials to a predetermined temperature, a lubricant applicator for applying the lubricant on the surfaces of the cold plastic working materials heated at the heating unit, and a drying unit for drying the lubricant applied on the surfaces of the cold plastic working materials by applying cooling air stream to them. The cooling air stream has a temperature lower than that of the cold plastic working materials heated by the heating unit.Type: GrantFiled: September 7, 2000Date of Patent: February 4, 2003Assignee: Okaya & Co., Ltd.Inventors: Kimio Momose, Mamoru Yamamoto, Seiichi Akimoto, Ryosuke Fukuchi, Kenichirou Ikeda, Kazuhiro Matsushita
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Publication number: 20030021153Abstract: Disclosed is a nonvolatile memory device and a data processing system with a reduced layout area of a semiconductor chip, capable of efficiently generating a high voltage without deteriorating charge transfer efficiency of a charge pump circuit. In charge pump unit circuits of a plurality of stages provided for a charge pump circuit such as a nonvolatile memory, as a control signal to be supplied to the gate of a first MOS transistor for transferring charges from a first capacitor for charge pump at a stage to a first capacity at the next stage, a fourth signal having an amplitude of a difference voltage between the power supply voltage and the charge pump voltage of the first capacitor at a corresponding stage, obtained from two control signals of a second signal and a third signal each changing in amplitude of the power supply voltage. The second signal is supplied via a second capacitor.Type: ApplicationFiled: July 2, 2002Publication date: January 30, 2003Applicant: Hitachi, Ltd.Inventors: Yuki Matsuda, Norihisa Yamamoto, Kazuhiro Matsushita, Kazuki Watanabe
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Publication number: 20010044934Abstract: A reception unit receives resource information transmitted through a network and constituted by a resource for version-up and an application program which applies the resource and stores the resource information in an operation region of a storage device. A decision unit decides whether an application occasion of the resource stored has come or not. When it is decided that the application occasion has come, an execution unit performs a process of copying the resource information in a maintenance region of the storage device and making the maintenance region valid in the next boot-up operation of a system.Type: ApplicationFiled: February 20, 2001Publication date: November 22, 2001Inventors: Giro Hirai, Mikayo Kosugi, Shouichi Matsuoka, Yasushi Makiyama, Takanori Shimizu, Kazuhiro Matsushita, Junichi Nagase
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Publication number: 20010029529Abstract: A remote maintenance apparatus is provided. The remote maintenance apparatus includes: a first obtaining part which obtains configuration information of terminals sent from the terminals; a storing part which stores the configuration information while bringing the configuration information into correspondence with generation information; a second obtaining part which obtains configuration information of a failed terminal; and an extraction part which extracts difference information between configuration information obtained by the second obtaining part and configuration information stored in the storing part which has older generation.Type: ApplicationFiled: March 22, 2001Publication date: October 11, 2001Inventors: Ikuko Tachibana, Akira Ohtsuka, Hideki Ise, Kazuhiro Matsushita, Hideki Yoshida, Kazuhiko Itoh