Patents by Inventor Hiroyuki Mitome
Hiroyuki Mitome 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: 10942815Abstract: A storage control system to provide file-level storage and block-level storage services. The storage control system has a computer system including a second I/O unit configured to receive block-level storage related requests, a processor unit, a first memory unit, and a storage unit; and a programmable logic device including a first I/O unit configured to receive file-level storage related requests, an interface unit configured to communicate with the computer system, one or more programmable hardware-implemented processing units and for processing of file-level storage related requests, and a second memory unit.Type: GrantFiled: July 9, 2015Date of Patent: March 9, 2021Assignees: HITACHI, LTD., HITACHI VANTARA LLCInventors: Sathisha Poojary, Christopher James Aston, Graham Ellement, Simon Carl Johnson, Hiroyuki Mitome, Naoki Inoue, Norimitsu Hayakawa, Yukari Hatta, Yasuo Hirata, Ryosuke Matsubara
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Publication number: 20180137013Abstract: A storage control system to provide file-level storage and block-level storage services. The storage control system has a computer system including a second 1/0 unit configured to receive block-level storage related requests, a processor unit, a first memory unit, and a storage unit; and a programmable logic device including a first 1/0 unit configured to receive file-level storage related requests, an interface unit configured to communicate with the computer system, one or more programmable hardware-implemented processing units and for processing of file-level storage related requests, and a second memory unit.Type: ApplicationFiled: July 9, 2015Publication date: May 17, 2018Inventors: Sathisha POOJARY, Christopher James ASTON, Graham ELLEMENT, Simon Carl JOHNSON, Hiroyuki MITOME, Naoki INOUE, Norimitsu HAYAKAWA, Yukari HATTA, Yasuo HIRATA, Ryosuke MATSUBARA
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Publication number: 20140313682Abstract: A composite electronic component includes a metal component with a wide surface terminal, a printed circuit board with a wide surface mounting pad; and a plurality of small area solder films partitioned into small sectioned regions. The small sectioned regions are sectioned by grid-shaped solder resist banks on the wide surface mounting pad. A cream solder is applied on the individual small sectioned regions to form the plurality of small area solder films. The grid-shaped solder resist bank has a width configured to: reduce a bubble that occurs in the sectioned region at one side of the grid-shaped solder resist bank from merging with a bubble that occurs in the sectioned region at another side of the grid-shaped solder resist bank; and act as an escaping route for a bubble that occur in the small area solder film.Type: ApplicationFiled: April 21, 2014Publication date: October 23, 2014Applicant: NIHON DEMPA KOGYO CO., LTD.Inventor: HIROYUKI MITOME
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Patent number: 8749314Abstract: A crystal unit and a thermistor with negative resistance-temperature characteristics are housed in a thermostatic oven heated by a heater. A transistor driving the heater is controlled by an output of a differential amplifier, the thermistor is placed between a power supply voltage and an inverting input of the amplifier, and a first resistor used to adjust the temperature of a zero temperature coefficient point of the crystal unit is installed between the inverting input and a ground point. A second resistor is installed between the power supply voltage and a non-inverting input of the amplifier and a third resistor is installed between the non-inverting input and ground point. One of the second and third resistors is a resistor assembly made up of a plurality of resistance elements and one of these resistance elements is provided with positive resistance-temperature characteristics and adapted to detect ambient temperature.Type: GrantFiled: June 4, 2012Date of Patent: June 10, 2014Assignee: Nihon Dempa Kogyo Co., Ltd.Inventors: Manabu Ito, Hiroyuki Mitome
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Patent number: 8466753Abstract: A metal base having plural protrusions at its bottom is engaged with and placed on standing metal pins in plural through holes provided in a base board, and a circuit board is fitted to an upper end of the metal pins. A crystal resonator is arranged on the circuit board via a heater element, and the metal base is covered with a metal cover, thereby obtaining a sealed structure of the crystal resonator. A two-stage counterbored portion including a first-stage and a second-stage counterbored portions is formed in the bottom of the base board, and a solder or conductive resin is filled in a gap between the first-stage counterbored portion formed around the metal pin inserted into the through hole, and the through hole and the metal pin to fix the metal pin in the though hole. Slits penetrating through the base board are formed around the metal pin.Type: GrantFiled: September 13, 2011Date of Patent: June 18, 2013Assignee: Nihon Dempa Kogyo Co., Ltd.Inventors: Hiroyuki Mitome, Daisuke Nishiyama, Masakazu Nishiwaki, Hiroyuki Murakoshi
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Patent number: 8390390Abstract: The present invention relates to an oven controlled crystal oscillator that can obtain stable oscillation frequency by reducing a temperature change in an oscillation element. The oven controlled crystal oscillator comprises; a heat-conducting plate mounted on one surface of a circuit board, a crystal resonator mounted on a surface of the heat-conducting plate opposite to the surface of the circuit board, an oscillation element constituting an oscillation circuit together with the crystal resonator, and a thermistor that detects temperature of the crystal resonator, a heating resistance which heats the crystal resonator, and a temperature control element including at least a power transistor, to constitute a temperature control circuit together with the thermistor and the heating resistance.Type: GrantFiled: September 23, 2010Date of Patent: March 5, 2013Assignee: Nihon Dempa Kogyo Co., Ltd.Inventors: Manabu Ito, Hiroyuki Mitome, Takeo Oita
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Publication number: 20120306582Abstract: A crystal unit and a thermistor with negative resistance-temperature characteristics are housed in a thermostatic oven heated by a heater. A transistor driving the heater is controlled by an output of a differential amplifier, the thermistor is placed between a power supply voltage and an inverting input of the amplifier, and a first resistor used to adjust the temperature of a zero temperature coefficient point of the crystal unit is installed between the inverting input and a ground point. A second resistor is installed between the power supply voltage and a non-inverting input of the amplifier and a third resistor is installed between the non-inverting input and ground point. One of the second and third resistors is a resistor assembly made up of a plurality of resistance elements and one of these resistance elements is provided with positive resistance-temperature characteristics and adapted to detect ambient temperature.Type: ApplicationFiled: June 4, 2012Publication date: December 6, 2012Applicant: NIHON DEMPA KOGYO CO., LTDInventors: Manabu Ito, Hiroyuki Mitome
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Publication number: 20120235761Abstract: A metal base having plural protrusions at its bottom is engaged with and placed on standing metal pins in plural through holes provided in a base board, and a circuit board is fitted to an upper end of the metal pins. A crystal resonator is arranged on the circuit board via a heater element, and the metal base is covered with a metal cover, thereby obtaining a sealed structure of the crystal resonator. A two-stage counterbored portion including a first-stage and a second-stage counterbored portions is formed in the bottom of the base board, and a solder or conductive resin is filled in a gap between the first-stage counterbored portion formed around the metal pin inserted into the through hole, and the through hole and the metal pin to fix the metal pin in the though hole. Slits penetrating through the base board are formed around the metal pin.Type: ApplicationFiled: September 13, 2011Publication date: September 20, 2012Applicant: NIHON DEMPA KOGYO CO., LTD.Inventors: HIROYUKI MITOME, DAISUKE NISHIYAMA, MASAKAZU NISHIWAKI, HIROYUKI MURAKOSHI
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Publication number: 20120161887Abstract: The present invention relates to an oven controlled crystal oscillator that can obtain stable oscillation frequency by reducing a temperature change in an oscillation element. The oven controlled crystal oscillator comprises; a heat-conducting plate mounted on one surface of a circuit board, a crystal resonator mounted on a surface of the heat-conducting plate opposite to the surface of the circuit board, an oscillation element constituting an oscillation circuit together with the crystal resonator, and a thermistor that detects temperature of the crystal resonator, a heating resistance which heats the crystal resonator, and a temperature control element including at least a power transistor, to constitute a temperature control circuit together with the thermistor and the heating resistance.Type: ApplicationFiled: September 23, 2010Publication date: June 28, 2012Applicant: NIHON DEMPA KOGYO CO., LTD.Inventors: Manabu Ito, Hiroyuki Mitome, Takeo Oita
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Patent number: 8149068Abstract: A temperature controlled oscillator is provided with a circuit substrate having a crystal resonator, an oscillating circuit, and a temperature control circuit, arranged on one or both principal surfaces, and a container main body that accommodates the circuit substrate and has mount terminals on an outer bottom surface thereof. The temperature control circuit includes at least a first temperature sensor that detects an operating temperature of the crystal resonator, a second temperature sensor that detects a surrounding temperature of the container main body, and a heating resistor that applies heat to the crystal resonator, and lead wires extend from the circuit substrate and are connected electrically to the mount terminals. An insulation groove that passes through the circuit substrate in a thickness direction is formed between: a first lead wire closest to the second temperature sensor, and the second temperature sensor; and the heating resistor.Type: GrantFiled: May 10, 2010Date of Patent: April 3, 2012Assignee: Nihon Dempa Kogyo Co., Ltd.Inventors: Manabu Ito, Hiroyuki Mitome, Takeo Oita
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Publication number: 20100289589Abstract: The present invention provides a temperature controlled oscillator capable of detecting the surrounding temperature at a high level of precision, and obtaining stable oscillating frequencies. The temperature controlled oscillator of the invention is provided with a circuit substrate having a crystal resonator, an oscillating circuit, and a temperature control circuit, arranged on one or both principal surfaces, and a container main body that accommodates the circuit substrate and has mount terminals on an outer bottom surface thereof. The temperature control circuit includes at least a first temperature sensor that detects an operating temperature of the crystal resonator, a second temperature sensor that detects a surrounding temperature of the container main body, and a heating resistor that applies heat to the crystal resonator, and lead wires extend from the circuit substrate and are connected electrically to the mount terminals.Type: ApplicationFiled: May 10, 2010Publication date: November 18, 2010Applicant: NIHON DEMPA KOGYO CO., LTD.Inventors: Manabu Ito, Hiroyuki Mitome, Takeo Oita
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Patent number: 7769031Abstract: A plurality of machine systems constituted by different VLAN constitution methods are integrated on one machine system by using virtual machines. An operation can be switched for virtual network interface cards to VLAN communication corresponding to VLAN ID set to a virtual network interface card or to VLAN communication corresponding to VLAN ID set by OS on a virtual machine using the virtual network interface card depending on whether or not VLAN ID is set.Type: GrantFiled: December 7, 2006Date of Patent: August 3, 2010Assignee: Hitachi, Ltd.Inventors: Hiroyuki Mitome, Yuji Tsushima
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Patent number: 7509475Abstract: A virtual machine control method and a virtual machine system are disclosed. In the case where a guest program can be operated in a plurality of address translation modes and the same guest virtual address is translated into different host real addresses in each address translation mode, the illegal access to a host real address by illegal address translation by double registration in the same page table is avoided, and the address translation mechanism is efficiently operated. A plurality of host page tables are prepared in the main storage, and one of the host page tables is selected with the change in address translation mode of the guest program. The bottom address of the selected host page table is set in the host page table register thereby to switch the host page table.Type: GrantFiled: October 26, 2006Date of Patent: March 24, 2009Assignee: Hitachi, Ltd.Inventors: Makiko Shinohara, Akiko Mori, Shuhei Matsumoto, Isao Watanabe, Hiroyuki Mitome
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Patent number: 7479835Abstract: A constant temperature oscillator includes a crystal oscillator that is provided upright on a circuit board, an oscillation element arranged on the circuit board and configuring an oscillation circuit in conjunction with the crystal oscillator, and a temperature control element including a heating chip resistance and a thermistor, arranged on the circuit board, and configuring a temperature control circuit that keeps an operating temperature of the crystal oscillator constant, and which is provided with a heat transfer plate between the heating chip resistance and the bottom face of the oscillator container, wherein, the heat transfer plate has a notch into which the heating chip resistance is fitted, and a heat sink lies between the heat transfer plate and the heating chip resistance and closely contacts with them.Type: GrantFiled: September 11, 2006Date of Patent: January 20, 2009Assignee: Nihon Dempa Kogyo Co., Ltd.Inventors: Hiroyuki Mitome, Manabu Ito, Takeshi Uchida
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Publication number: 20070140263Abstract: A plurality of machine systems constituted by different VLAN constitution methods are integrated on one machine system by using virtual machines. An operation can be switched for virtual network interface cards to VLAN communication corresponding to VLAN ID set to a virtual network interface card or to VLAN communication corresponding to VLAN ID set by OS on a virtual machine using the virtual network interface card depending on whether or not VLAN ID is set.Type: ApplicationFiled: December 7, 2006Publication date: June 21, 2007Applicant: Hitachi, Ltd.Inventors: Hiroyuki Mitome, Yuji Tsushima
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Publication number: 20070101099Abstract: A virtual machine control method and a virtual machine system are disclosed. In the case where a guest program can be operated in a plurality of address translation modes and the same guest virtual address is translated into different host real addresses in each address translation mode, the illegal access to a host real address by illegal address translation by double registration in the same page table is avoided, and the address translation mechanism is efficiently operated. A plurality of host page tables are prepared in the main storage, and one of the host page tables is selected with the change in address translation mode of the guest program. The bottom address of the selected host page table is set in the host page table register thereby to switch the host page table.Type: ApplicationFiled: October 26, 2006Publication date: May 3, 2007Inventors: Makiko Shinohara, Akiko Mori, Shuhei Matsumoto, Isao Watanabe, Hiroyuki Mitome
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Publication number: 20070057742Abstract: A constant temperature oscillator which comprises: a crystal oscillator that is provided upright on a circuit board, and which comprises a plurality of lead wires extending out from a bottom face of an oscillator container in which a crystal piece is hermetically sealed; an oscillation element arranged on the circuit board and configuring an oscillation circuit in conjunction with the crystal oscillator; and a temperature control element including at least a heating chip resistance and a thermistor, arranged on the circuit board, and configuring a temperature control circuit that keeps an operating temperature of the crystal oscillator constant; and which is provided with a heat transfer plate between the heating chip resistance and the bottom face of the oscillator container, wherein, the heat transfer plate has a notch into which the heating chip resistance is fitted, and, a heat sink lies between the heat transfer plate and the heating chip resistance and closely contacts with them.Type: ApplicationFiled: September 11, 2006Publication date: March 15, 2007Inventors: Hiroyuki Mitome, Manabu Ito, Takeshi Uchida
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Patent number: 6640332Abstract: A method for determining a wiring pattern of a signal line for connection of a circuit on a multi-layer printed wiring board includes the steps of providing a constraint of an electrical length which the signal line must satisfy, determining an electrical length change at a discontinuous delay part of the signal line along which a signal propagates, determining a wiring route of the signal line, calculating an electrical length of the signal line with use of a wiring length of the signal line and the determined electrical length change, judging whether or not the calculated electrical length satisfies the electrical length constraint given to the signal line, and determining the wiring route as a wiring pattern when the electrical length constraint is satisfied as the decision result, thereby carrying out a wiring layout to make an electrical length constraint satisfied.Type: GrantFiled: May 23, 2001Date of Patent: October 28, 2003Assignee: Hitachi, Ltd.Inventors: Hiroyuki Mitome, Katsuyuki Itoh
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Publication number: 20020089830Abstract: A method for determining a wiring pattern of a signal line for connection of a circuit on a multi-layer printed wiring board includes the steps of providing a constraint of an electrical length which the signal line must satisfy, determining an electrical length change at a discontinuous delay part of the signal line along which a signal propagates, determining a wiring route of the signal line, calculating an electrical length of the signal line with use of a wiring length of the signal line and the determined electrical length change, judging whether or not the calculated electrical length satisfies the electrical length constraint given to the signal line, and determining the wiring route as a wiring pattern when the electrical length constraint is satisfied as the decision result, thereby carrying out a wiring layout to make an electrical length constraint satisfied.Type: ApplicationFiled: May 25, 2001Publication date: July 11, 2002Inventors: Hiroyuki Mitome, Katsuyuki Itoh