Patents by Inventor Minehiro Nemoto
Minehiro Nemoto 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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Patent number: 7840840Abstract: A DC backup power supply system having a plurality of loads to which AC from a commercial power source is supplied, and DC power storage means for supplying DC power to the plurality of the loads at the time of a power outage of the commercial power source, said DC backup power supply system including: a control circuit having a first DC backup output for supplying a power from the DC power storage means to the plurality of the loads, including a specific load, only during the power outage of the commercial power source, and a second DC backup output for continuously supplying a power from the DC power storage means to the specific load regardless of the power outage of the commercial power source or sound operation thereof, the control circuit supplying the respective powers from the same DC power storage means to the first and second DC backup outputs.Type: GrantFiled: July 28, 2008Date of Patent: November 23, 2010Assignee: Hitachi Computer Peripherals Co., Ltd.Inventors: Fumikazu Takahashi, Minehiro Nemoto, Isao Nemoto, legal representative, Akihiko Kanouda, Masahiro Hamaogi, Yoshihide Takahashi
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Patent number: 7598605Abstract: A primary side circuit and a secondary side circuit are provided on first and second semiconductor substrates, respectively. A first capacitive insulator on the first substrate electrically insulates and isolates between the primary and secondary side circuits while permitting signal transmission between these circuits. A second capacitive insulator on the second semiconductor substrate electrically isolates the primary and secondary side circuit while permitting signal transmission therebetween. First and second frames are provided for input and output of signals to and from the primary and secondary side circuits. External electrodes of the first and second capacitive insulators are connected together by a third lead frame via a conductive adhesive body including more than one solder ball. The first and second substrates and the lead frames are sealed by a dielectric resin.Type: GrantFiled: July 31, 2006Date of Patent: October 6, 2009Assignee: Hitachi, Ltd.Inventors: Noboru Akiyama, Minehiro Nemoto, Seigou Yukutake, Yasuyuki Kojima, Kazuyuki Kamegaki
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Patent number: 7522692Abstract: A communication system is provided including a transceiver and an application controller to transmit and receive signals through the transceiver. An isolator which insulates and separates the transceiver and application controller includes primary and secondary side circuits insulated from each other on a substrate and a capacitive insulating means to transfer signals between the primary and second sides while insulating and separating the primary side circuit from the secondary side circuit.Type: GrantFiled: March 7, 2007Date of Patent: April 21, 2009Assignee: Hitachi, Ltd.Inventors: Seigoh Yukutake, Yasuyuki Kojima, Minehiro Nemoto, Masatsugu Amishiro, Takayuki Iwasaki, Shinichiro Mitani, Katsuhiro Furukawa, Chiyoshi Kamada, Atsuo Watanabe, Takayuki Oouchi, Nobuyasu Kanekawa
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Patent number: 7495415Abstract: A DC backup power supply system having a battery a charge-discharge circuit for charging and discharging a power between the battery and a DC line and a control circuit for controlling the charge-discharge circuit, wherein the battery has a number of battery cells and cylindrical portions of the battery cells are laid on an approximately horizontal plane.Type: GrantFiled: May 17, 2005Date of Patent: February 24, 2009Assignees: Hitachi, Ltd., Hitachi Maxwell Ltd., Hitachi Computer Peripherals Co.Inventors: Akihiko Kanouda, Minehiro Nemoto, Fumikazu Takahashi, Masahiro Hamaogi, Yoshihide Takahashi, Takashi Tanabe, Takao Gotou, Masato Isogai, Toshikatsu Miyata
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Publication number: 20080290733Abstract: A DC backup power supply system having a plurality of loads to which AC from a commercial power source is supplied, and DC power storage means for supplying DC power to the plurality of the loads at the time of a power outage of the commercial power source, said DC backup power supply system including: a control circuit having a first DC backup output for supplying a power from the DC power storage means to the plurality of the loads, including a specific load, only during the power outage of the commercial power source, and a second DC backup output for continuously supplying a power from the DC power storage means to the specific load regardless of the power outage of the commercial power source or sound operation thereof, the control circuit supplying the respective powers from the same DC power storage means to the first and second DC backup outputs.Type: ApplicationFiled: July 28, 2008Publication date: November 27, 2008Inventors: Fumikazu Takahashi, Minehiro Nemoto, Isao Nemoto, Akihiko Kanouda, Masahiro Hamaogi, Yoshihide Takahashi
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Patent number: 7432617Abstract: An uninterruptible power system for inputting an AC power, converting the AC power into a desired power, supplying the desired power to a load, and upon occurrence of an AC failure, converting a DC power from energy accumulation means into the desired power and supplying the desired power to the load, wherein the DC power from said energy accumulation means is passed through two serially connected boost means, and thereafter the power is converted into the desired power to be supplied to the load, wherein first boost means of the two serially connected boost means, which is nearer to the energy accumulation means, raises the DC electric power from said energy accumulation means to supply second boost means of the two serially connected boost means when supply of electric power is interrupted, and lowers inputted electric power for charging the electric accumulation means during an ordinary operation.Type: GrantFiled: May 2, 2006Date of Patent: October 7, 2008Assignees: Hitachi, Ltd., Hitachi Computer Peripherals Co., Ltd.Inventors: Akihiko Kanouda, Fumikazu Takahashi, Minehiro Nemoto, Masahiro Hamaogi
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Patent number: 7406623Abstract: In the case where there coexist general loads requiring backup only for a short duration and a specific load requiring backup for a longer duration, uninterruptible power with higher reliability is supplied to the specific load with the adoption of a simple configuration. A DC backup power supply system comprises an AC/DC converter for normally supplying DC power to loads in while (the general loads and the specific load, included), and a control circuit for supplying DC output backing up the loads in whole for relatively short time only from a battery at the time of a power outage, while supplying DC output backing up the specific load, such as a cache memory and so forth, for relatively long time. Thus, it is possible to implement an uninterruptible power supply system small in size and low in cost, provided with a function for proper use depending on a prevailing situation.Type: GrantFiled: September 29, 2004Date of Patent: July 29, 2008Assignee: Hitachi Computer Peripherals Co., Ltd.Inventors: Fumikazu Takahashi, Isao Nemoto, legal representative, Akihiko Kanouda, Masahiro Hamaogi, Yoshihide Takahashi, Minehiro Nemoto
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Patent number: 7289553Abstract: A communication system is provided including a transceiver and an application controller to transmit and receive signals through the transceiver. An isolator which insulates and separates the transceiver and application controller includes primary and secondary side circuits insulated from each other on a substrate and a capacitive insulating means to transfer signals between the primary and second sides while insulating and separating the primary side circuit from the secondary side circuit.Type: GrantFiled: March 4, 2003Date of Patent: October 30, 2007Assignee: Hitachi, Ltd.Inventors: Seigoh Yukutake, Yasuyuki Kojima, Minehiro Nemoto, Masatsugu Amishiro, Takayuki Iwasaki, Shinichiro Mitani, Katsuhiro Furukawa, Chiyoshi Kamada, Atsuo Watanabe, Takayuki Oouchi, Nobuyasu Kanekawa
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Patent number: 7245469Abstract: A reliable uninterruptible DC power supply device. The DC backup power supply device includes an AC/DC converter, a DC/DC converter, voltage step-up/down choppers and a battery connected to a DC path of a main circuit connected with a load via a switch, and a microcomputer. In the device, under control of the microcomputer, the voltage step-up/down choppers are first operated under a condition that the MOS FET was turned OFF for self diagnosis of the backup power supply device. Next, the switch is turned ON to execute the remaining self diagnosis. The DC backup power supply device can execute its self diagnosis with a reduced likelihood of danger of exerting an adverse effect on the main circuit and also can exhibit a reliable uninterruptible power supply function.Type: GrantFiled: April 14, 2003Date of Patent: July 17, 2007Assignees: Hitachi, Ltd., Hitachi Maxell, Ltd., Hitachi Computer Peripherals Co., Ltd.Inventors: Minehiro Nemoto, Akihiko Kanouda, Fumikazu Takahashi, Masahiro Hamaogi, Yoshihide Takahashi, Takashi Tanabe, Takao Gotou, Masato Isogai, Toshikatsu Miyata
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Publication number: 20070153886Abstract: A communication system is provided including a transceiver and an application controller to transmit and receive signals through the transceiver. An isolator which insulates and separates the transceiver and application controller includes primary and secondary side circuits insulated from each other on a substrate and a capacitive insulating means to transfer signals between the primary and second sides while insulating and separating the primary side circuit from the secondary side circuit.Type: ApplicationFiled: March 7, 2007Publication date: July 5, 2007Inventors: Seigoh Yukutake, Yasuyuki Kojima, Minehiro Nemoto, Masatsugu Amishiro, Takayuki Iwasaki, Shinichiro Mitani, Katsuhiro Furukawa, Chiyoshi Kamada, Atsuo Watanabe, Takayuki Oouchi, Nobuyasu Kanekawa
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Publication number: 20060267193Abstract: A primary side circuit and a secondary side circuit are provided on first and second semiconductor substrates, respectively. A first capacitive insulator on the first substrate electrically insulates and isolates between the primary and secondary side circuits while permitting signal transmission between these circuits. A second capacitive insulator on the second semiconductor substrate electrically isolates the primary and secondary side circuit while permitting signal transmission therebetween. First and second frames are provided for input and output of signals to and from the primary and secondary side circuits. External electrodes of the first and second capacitive insulators are connected together by a third lead frame via a conductive adhesive body including more than one solder ball. The first and second substrates and the lead frames are sealed by a dielectric resin.Type: ApplicationFiled: July 31, 2006Publication date: November 30, 2006Inventors: Noboru Akiyama, Minehiro Nemoto, Seigou Yukutake, Yasuyuki Kojima, Kazuyuki Kamegaki
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Publication number: 20060267410Abstract: An uninterruptible power system for inputting an AC power, converting the AC power into a desired power, supplying the desired power to a load, and upon occurrence of an AC failure, converting a DC power from energy accumulation means into the desired power and supplying the desired power to the load, wherein the DC power from said energy accumulation means is passed through two serially connected boost means, and thereafter the power is converted into the desired power to be supplied to the load, wherein first boost means of the two serially connected boost means, which is nearer to the energy accumulation means, raises the DC electric power from said energy accumulation means to supply second boost means of the two serially connected boost means when supply of electric power is interrupted, and lowers inputted electric power for charging the electric accumulation means during an ordinary operation.Type: ApplicationFiled: May 2, 2006Publication date: November 30, 2006Inventors: Akihiko Kanouda, Fumikazu Takahashi, Minehiro Nemoto, Masahiro Hamaogi
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Patent number: 7091588Abstract: A primary side circuit and a secondary side circuit are provided on first and second semiconductor substrates, respectively. A first capacitive insulator on the first substrate electrically insulates and isolates between the primary and secondary side circuits while permitting signal transmission between these circuits. A second capacitive insulator on the second semiconductor substrate electrically isolates the primary and secondary side circuit while permitting signal transmission therebetween. First and second frames are provided for input and output of signals to and from the primary and secondary side circuits. External electrodes of the first and second capacitive insulators are connected together by a third lead frame via a conductive adhesive body including more than one solder ball. The first and second substrates and the lead frames are sealed by a dielectric resin.Type: GrantFiled: December 30, 2004Date of Patent: August 15, 2006Assignee: Hitachi, Ltd.Inventors: Noboru Akiyama, Minehiro Nemoto, Seigou Yukutake, Yasuyuki Kojima, Kazuyuki Kamegaki
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Patent number: 7049711Abstract: A boost circuit is connected to a rechargeable battery and a switch is connected between a rectification circuit and a power factor correction converter. In the power failure state, the switch is turned on to activate the boost circuit and energy of the rechargeable battery is supplied to a load by rasing the voltage at two steps in the path from the boost circuit, switch, and to power factor correction converter. Since the voltage of the battery can be lowered, the number of serially connected cells can be made small. The volume of UPS can be reduced and a low cost can be realized. Since the number of serially connected cells is reduced, the reliability against failure of battery cells can be improved.Type: GrantFiled: July 22, 2003Date of Patent: May 23, 2006Assignees: Hitachi, Ltd., Hitachi Computer Peripherals Co., Ltd.Inventors: Akihiko Kanouda, Fumikazu Takahashi, Minehiro Nemoto, Masahiro Hamaogi
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Publication number: 20050206242Abstract: A DC backup power supply system having a battery a charge-discharge circuit for charging and discharging a power between the battery and a DC line and a control circuit for controlling the charge-discharge circuit, wherein the battery has a number of battery cells and cylindrical portions of the battery cells are laid on an approximately horizontal plane.Type: ApplicationFiled: May 17, 2005Publication date: September 22, 2005Inventors: Akihiko Kanouda, Minehiro Nemoto, Fumikazu Takahashi, Masahiro Hamaogi, Yoshihide Takahashi, Takashi Tanabe, Takao Gotou, Masato Isogai, Toshikatsu Miyata
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Publication number: 20050146223Abstract: An information apparatus including a DC backup power supply system for supplying DC power to the information apparatus. The DC backup power supply system includes a battery pack having a plurality of sets of battery cells, each set including a plurality of serially connected battery cells extending in one direction, and the plurality of sets of the battery cells being disposed in a second direction which is transverse to the first direction. The plurality of sets of battery cells are serially connected to one another, and at least adjacent sets of the battery cells have an insulated sheet disposed therebetween.Type: ApplicationFiled: March 2, 2005Publication date: July 7, 2005Inventors: Akihiko Kanouda, Minehiro Nemoto, Fumikazu Takahashi, Masahiro Hamaogi, Yoshihide Takahashi, Takashi Tanabe, Takao Gotou, Masato Isogai, Toshikatsu Miyata
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Publication number: 20050112932Abstract: A primary side circuit and a secondary side circuit are provided on first and second semiconductor substrates, respectively. A first capacitive insulator on the first substrate electrically insulates and isolates between the primary and secondary side circuits while permitting signal transmission between these circuits. A second capacitive insulator on the second semiconductor substrate electrically isolates the primary and secondary side circuit while permitting signal transmission therebetween. First and second frames are provided for input and output of signals to and from the primary and secondary side circuits. External electrodes of the first and second capacitive insulators are connected together by a third lead frame via a conductive adhesive body including more than one solder ball. The first and second substrates and the lead frames are sealed by a dielectric resin.Type: ApplicationFiled: December 30, 2004Publication date: May 26, 2005Inventors: Noboru Akiyama, Minehiro Nemoto, Seigou Yukutake, Yasuyuki Kojima, Kazuyuki Kamegaki
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Publication number: 20050099750Abstract: In the case where there coexist general loads requiring backup only for a short duration and a specific load requiring backup for a longer duration, uninterruptible power with higher reliability is supplied to the specific load with the adoption of a simple configuration. A DC backup power supply system comprises an AC/DC converter for normally supplying DC power to loads in while (the general loads and the specific load, included), and a control circuit for supplying DC output backing up the loads in whole for relatively short time only from a battery at the time of a power outage, while supplying DC output backing up the specific load, such as a cache memory and so forth, for relatively long time. Thus, it is possible to implement an uninterruptible power supply system small in size and low in cost, provided with a function for proper use depending on a prevailing situation.Type: ApplicationFiled: September 29, 2004Publication date: May 12, 2005Inventors: Fumikazu Takahashi, Minehiro Nemoto, Isao Nemoto, Akihiko Kanouda, Masahiro Hamaogi, Yoshihide Takahashi
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Patent number: 6853063Abstract: Wire bonding or printed wiring board leads or, alternatively, lead frames or equivalents thereof are used to electrically connect external electrodes of high withstand voltage capacitors formed on a plurality of semiconductor chips. A driver circuit for signal transmission or receiver circuit for signal receipt formed on the semiconductor chips are electrically connected with substrate-side electrodes of said high withstand voltage capacitors, causing the plurality of semiconductor chips to be received within either a single package or a single module. Using this arrangement, a semiconductor device is capable of achieving both dielectricity and size reduction.Type: GrantFiled: May 22, 2003Date of Patent: February 8, 2005Assignee: Hitachi, Ltd.Inventors: Noboru Akiyama, Minehiro Nemoto, Seigou Yukutake, Yasuyuki Kojima, Kazuyuki Kamegaki
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Publication number: 20040125626Abstract: A boost circuit is connected to a rechargeable battery and a switch is connected between a rectification circuit and a power factor correction converter. In the power failure state, the switch is turned on to activate the boost circuit and energy of the rechargeable battery is supplied to a load by rasing the voltage at two steps in the path from the boost circuit, switch, and to power factor correction converter. Since the voltage of the battery can be lowered, the number of serially connected cells can be made small. The volume of UPS can be reduced and a low cost can be realized. Since the number of serially connected cells is reduced, the reliability against failure of battery cells can be improved.Type: ApplicationFiled: July 22, 2003Publication date: July 1, 2004Inventors: Akihiko Kanouda, Fumikazu Takahashi, Minehiro Nemoto, Masahiro Hamaogi